🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms #13537

MarinPostma · 2025-03-25T14:48:10Z

There was a bug in the validation of form data for optional params with None default value. This is a regression that was introduced by #12134.

Explaination:

The _get_multidict_value uses None to represent both the absence a value in the dict, and a default value of None for that field. When the values are collected in _extract_form_body, they are only added to the values if they are not None. Later (#12134), some code was added that attempted to complement the model values with values not explicitely in the model, if values for those fields were not already processed earlier. The issue is that since we didn't add values to the initial value dict if they were none, we attempted to add them again in that second iteration. This generally wasn't an issue, except for the fast that a form field set to the empty string ("") is interpreted as the absence of that field. This resulted in _get_multidict_value picking the default value, that would happen to be None, so it wasn't added to the values dict in the first iteration. In the second iteration, we would find that value in the request params again, but set to "", and add that to the initial value dict. Later, validation would choke on that empty string.

The fix is to keep track of already visited field, rather that relying on the content of the values dict to complement the missing field. Such thing was already done in request_params_to_args for example.

closes #13533

MarinPostma · 2025-03-31T14:38:59Z

Hello @tiangolo :) Do you think one will get merged? We're trying to figure out a way forward to be able to bump fastapi somehow, but if this is not a fix you'd merge, we'd need to think of a different approach

Thanks!

quiqueg

I just ran this patch against my full test suite and I can confirm that it fixed all of my tests that had started failing when upgrading from fastapi version 0.111.0 to 0.115.12.

Nice work, @MarinPostma!

MarinPostma · 2025-04-18T20:56:09Z

@quiqueg well I hope we can eventually merge it :)

tests/test_form_default.py

YuriiMotov

LGTM!

I removed the post_multi_part_file_first test as it was unrelated to the current issue and that issue (that the order of File and Form matters) has already been fixed: #11194

@MarinPostma, thanks you for your work and patience!

YuriiMotov · 2025-11-02T16:10:08Z

There is also #12502 that solves close issue - inability to pass None if form field is nullable, but default value is not None:

Code example in the details

from typing import Optional
from uuid import UUID, uuid4

from fastapi import FastAPI, Form
from fastapi.testclient import TestClient
from typing_extensions import Annotated

app = FastAPI()

default_uuid = uuid4()


@app.post("/form-optional")
def post_form_optional(
    test_id: Annotated[Optional[UUID], Form()] = default_uuid,
):
    return test_id


def test_pass_none() -> None:
    client = TestClient(app)
    response = client.post("/form-optional", data={"test_id": None})
    assert response.status_code == 200, response.text
    assert response.json() is None


def test_pass_empty_str() -> None:
    client = TestClient(app)
    response = client.post("/form-optional", data={"test_id": ""})
    assert response.status_code == 200, response.text
    assert response.json() is None

I think it's Ok if we address these cases separately, but it would be nice to investigate if we can easily address them both in one PR.

tiangolo

Sorry for the delay handling this, and thank you for the explanation and fix @MarinPostma! 🙌

Thanks for the help @YuriiMotov! 🍰

I made a local quick example with an HTML form to confirm that browsers by default would send the fields even if they are empty, and will send them with an empty string. That convinced me this fix is necessary.

This will be available in FastAPI 0.123.2, released in the next few hours. 🎉

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MR [#14564](https://github.com/fastapi/fastapi/pull/14564) by [@tiangolo](https://github.com/tiangolo). ##### Docs - ⚰️ Remove Python 3.8 from CI and remove Python 3.8 examples from source docs. MR [#14559](https://github.com/fastapi/fastapi/pull/14559) by [@YuriiMotov](https://github.com/YuriiMotov) and [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Update translations for pt (add-missing). MR [#14539](https://github.com/fastapi/fastapi/pull/14539) by [@tiangolo](https://github.com/tiangolo). - 🔧 Add LLM prompt file for French, generated from the existing French docs. MR [#14544](https://github.com/fastapi/fastapi/pull/14544) by [@tiangolo](https://github.com/tiangolo). - 🌐 Sync Portuguese docs (pages found with script). MR [#14554](https://github.com/fastapi/fastapi/pull/14554) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync Spanish docs (outdated pages found with script). MR [#14553](https://github.com/fastapi/fastapi/pull/14553) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync German docs. MR [#14519](https://github.com/fastapi/fastapi/pull/14519) by [@nilslindemann](https://github.com/nilslindemann). - 🔥 Remove inactive/scarce translations to Vietnamese. MR [#14543](https://github.com/fastapi/fastapi/pull/14543) by [@tiangolo](https://github.com/tiangolo). - 🔥 Remove inactive/scarce translations to Persian. MR [#14542](https://github.com/fastapi/fastapi/pull/14542) by [@tiangolo](https://github.com/tiangolo). - 🔥 Remove translation to emoji to simplify the new setup with LLM autotranslations. MR [#14541](https://github.com/fastapi/fastapi/pull/14541) by [@tiangolo](https://github.com/tiangolo). - 🌐 Update translations for pt (update-outdated). MR [#14537](https://github.com/fastapi/fastapi/pull/14537) by [@tiangolo](https://github.com/tiangolo). - 🌐 Update translations for es (update-outdated). MR [#14532](https://github.com/fastapi/fastapi/pull/14532) by [@tiangolo](https://github.com/tiangolo). - 🌐 Update translations for es (add-missing). MR [#14533](https://github.com/fastapi/fastapi/pull/14533) by [@tiangolo](https://github.com/tiangolo). - 🌐 Remove translations for removed docs. MR [#14516](https://github.com/fastapi/fastapi/pull/14516) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆ Bump `markdown-include-variants` from 0.0.7 to 0.0.8. MR [#14556](https://github.com/fastapi/fastapi/pull/14556) by [@YuriiMotov](https://github.com/YuriiMotov). - 🔧 Temporarily disable translations still in progress, being migrated to the new LLM setup. MR [#14555](https://github.com/fastapi/fastapi/pull/14555) by [@YuriiMotov](https://github.com/YuriiMotov). - 🔧 Update test workflow config, remove commented code. MR [#14540](https://github.com/fastapi/fastapi/pull/14540) by [@tiangolo](https://github.com/tiangolo). - 👷 Configure coverage, error on main tests, don't wait for Smokeshow. MR [#14536](https://github.com/fastapi/fastapi/pull/14536) by [@tiangolo](https://github.com/tiangolo). - 👷 Run Smokeshow always, even on test failures. MR [#14538](https://github.com/fastapi/fastapi/pull/14538) by [@tiangolo](https://github.com/tiangolo). - 👷 Make Pydantic versions customizable in CI. MR [#14535](https://github.com/fastapi/fastapi/pull/14535) by [@tiangolo](https://github.com/tiangolo). - 👷 Fix checkout GitHub Action fetch-depth for LLM translations, enable cron monthly. MR [#14531](https://github.com/fastapi/fastapi/pull/14531) by [@tiangolo](https://github.com/tiangolo). - 👷 Fix Typer command for CI LLM translations. MR [#14530](https://github.com/fastapi/fastapi/pull/14530) by [@tiangolo](https://github.com/tiangolo). - 👷 Update LLM translation CI, add language matrix and extra commands, prepare for scheduled run. MR [#14529](https://github.com/fastapi/fastapi/pull/14529) by [@tiangolo](https://github.com/tiangolo). - 👷 Update github-actions user for GitHub Actions workflows. MR [#14528](https://github.com/fastapi/fastapi/pull/14528) by [@tiangolo](https://github.com/tiangolo). - ➕ Add requirements for translations. MR [#14515](https://github.com/fastapi/fastapi/pull/14515) by [@tiangolo](https://github.com/tiangolo). ### [`v0.124.4`](https://github.com/fastapi/fastapi/releases/tag/0.124.4) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.3...0.124.4) ##### Fixes - 🐛 Fix parameter aliases. MR [#14371](https://github.com/fastapi/fastapi/pull/14371) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.124.3`](https://github.com/fastapi/fastapi/releases/tag/0.124.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.2...0.124.3) ##### Fixes - 🐛 Fix support for tagged union with discriminator inside of `Annotated` with `Body()`. MR [#14512](https://github.com/fastapi/fastapi/pull/14512) by [@tiangolo](https://github.com/tiangolo). ##### Refactors - ✅ Add set of tests for request parameters and alias. MR [#14358](https://github.com/fastapi/fastapi/pull/14358) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Docs - 📝 Tweak links format. MR [#14505](https://github.com/fastapi/fastapi/pull/14505) by [@tiangolo](https://github.com/tiangolo). - 📝 Update docs about re-raising validation errors, do not include string as is to not leak information. MR [#14487](https://github.com/fastapi/fastapi/pull/14487) by [@tiangolo](https://github.com/tiangolo). - 🔥 Remove external links section. MR [#14486](https://github.com/fastapi/fastapi/pull/14486) by [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Sync Russian docs. MR [#14509](https://github.com/fastapi/fastapi/pull/14509) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync German docs. MR [#14488](https://github.com/fastapi/fastapi/pull/14488) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - 👷 Tweak coverage to not pass Smokeshow max file size limit. MR [#14507](https://github.com/fastapi/fastapi/pull/14507) by [@tiangolo](https://github.com/tiangolo). - ✅ Expand test matrix to include Windows and MacOS. MR [#14171](https://github.com/fastapi/fastapi/pull/14171) by [@svlandeg](https://github.com/svlandeg). ### [`v0.124.2`](https://github.com/fastapi/fastapi/releases/tag/0.124.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.1...0.124.2) ##### Fixes - 🐛 Fix support for `if TYPE_CHECKING`, non-evaluated stringified annotations. MR [#14485](https://github.com/fastapi/fastapi/pull/14485) by [@tiangolo](https://github.com/tiangolo). ### [`v0.124.1`](https://github.com/fastapi/fastapi/releases/tag/0.124.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.0...0.124.1) ##### Fixes - 🐛 Fix handling arbitrary types when using `arbitrary_types_allowed=True`. MR [#14482](https://github.com/fastapi/fastapi/pull/14482) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Add variants for code examples in "Advanced User Guide". MR [#14413](https://github.com/fastapi/fastapi/pull/14413) by [@YuriiMotov](https://github.com/YuriiMotov). - 📝 Update tech stack in project generation docs. MR [#14472](https://github.com/fastapi/fastapi/pull/14472) by [@alejsdev](https://github.com/alejsdev). ##### Internal - ✅ Add test for Pydantic v2, dataclasses, UUID, and `__annotations__`. MR [#14477](https://github.com/fastapi/fastapi/pull/14477) by [@tiangolo](https://github.com/tiangolo). ### [`v0.124.0`](https://github.com/fastapi/fastapi/releases/tag/0.124.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.10...0.124.0) ##### Features - 🚸 Improve tracebacks by adding endpoint metadata. MR [#14306](https://github.com/fastapi/fastapi/pull/14306) by [@savannahostrowski](https://github.com/savannahostrowski). ##### Internal - ✏️ Fix typo in `scripts/mkdocs_hooks.py`. MR [#14457](https://github.com/fastapi/fastapi/pull/14457) by [@yujiteshima](https://github.com/yujiteshima). ### [`v0.123.10`](https://github.com/fastapi/fastapi/releases/tag/0.123.10) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.9...0.123.10) ##### Fixes - 🐛 Fix using class (not instance) dependency that has `__call__` method. MR [#14458](https://github.com/fastapi/fastapi/pull/14458) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix `separate_input_output_schemas=False` with `computed_field`. MR [#14453](https://github.com/fastapi/fastapi/pull/14453) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.123.9`](https://github.com/fastapi/fastapi/releases/tag/0.123.9) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.8...0.123.9) ##### Fixes - 🐛 Fix OAuth2 scopes in OpenAPI in extra corner cases, parent dependency with scopes, sub-dependency security scheme without scopes. MR [#14459](https://github.com/fastapi/fastapi/pull/14459) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.8`](https://github.com/fastapi/fastapi/releases/tag/0.123.8) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.7...0.123.8) ##### Fixes - 🐛 Fix OpenAPI security scheme OAuth2 scopes declaration, deduplicate security schemes with different scopes. MR [#14455](https://github.com/fastapi/fastapi/pull/14455) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.7`](https://github.com/fastapi/fastapi/releases/tag/0.123.7) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.6...0.123.7) ##### Fixes - 🐛 Fix evaluating stringified annotations in Python 3.10. MR [#11355](https://github.com/fastapi/fastapi/pull/11355) by [@chaen](https://github.com/chaen). ### [`v0.123.6`](https://github.com/fastapi/fastapi/releases/tag/0.123.6) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.5...0.123.6) ##### Fixes - 🐛 Fix support for functools wraps and partial combined, for async and regular functions and classes in path operations and dependencies. MR [#14448](https://github.com/fastapi/fastapi/pull/14448) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.5`](https://github.com/fastapi/fastapi/releases/tag/0.123.5) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.4...0.123.5) ##### Features - ✨ Allow using dependables with `functools.partial()`. MR [#9753](https://github.com/fastapi/fastapi/pull/9753) by [@lieryan](https://github.com/lieryan). - ✨ Add support for wrapped functions (e.g. `@functools.wraps()`) used with forward references. MR [#5077](https://github.com/fastapi/fastapi/pull/5077) by [@lucaswiman](https://github.com/lucaswiman). - ✨ Handle wrapped dependencies. MR [#9555](https://github.com/fastapi/fastapi/pull/9555) by [@phy1729](https://github.com/phy1729). ##### Fixes - 🐛 Fix optional sequence handling with new union syntax from Python 3.10. MR [#14430](https://github.com/fastapi/fastapi/pull/14430) by [@Viicos](https://github.com/Viicos). ##### Refactors - 🔥 Remove dangling extra condiitonal no longer needed. MR [#14435](https://github.com/fastapi/fastapi/pull/14435) by [@tiangolo](https://github.com/tiangolo). - ♻️ Refactor internals, update `is_coroutine` check to reuse internal supported variants (unwrap, check class). MR [#14434](https://github.com/fastapi/fastapi/pull/14434) by [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Sync German docs. MR [#14367](https://github.com/fastapi/fastapi/pull/14367) by [@nilslindemann](https://github.com/nilslindemann). ### [`v0.123.4`](https://github.com/fastapi/fastapi/releases/tag/0.123.4) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.3...0.123.4) ##### Fixes - 🐛 Fix OpenAPI schema support for computed fields when using `separate_input_output_schemas=False`. MR [#13207](https://github.com/fastapi/fastapi/pull/13207) by [@vgrafe](https://github.com/vgrafe). ##### Docs - 📝 Fix docstring of `servers` parameter. MR [#14405](https://github.com/fastapi/fastapi/pull/14405) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.123.3`](https://github.com/fastapi/fastapi/releases/tag/0.123.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.2...0.123.3) ##### Fixes - 🐛 Fix Query\Header\Cookie parameter model alias. MR [#14360](https://github.com/fastapi/fastapi/pull/14360) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix optional sequence handling in `serialize sequence value` with Pydantic V2. MR [#14297](https://github.com/fastapi/fastapi/pull/14297) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.123.2`](https://github.com/fastapi/fastapi/releases/tag/0.123.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.1...0.123.2) ##### Fixes - 🐛 Fix unformatted `{type_}` in FastAPIError. MR [#14416](https://github.com/fastapi/fastapi/pull/14416) by [@Just-Helpful](https://github.com/Just-Helpful). - 🐛 Fix parsing extra non-body parameter list. MR [#14356](https://github.com/fastapi/fastapi/pull/14356) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix parsing extra `Form` parameter list. MR [#14303](https://github.com/fastapi/fastapi/pull/14303) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms. MR [#13537](https://github.com/fastapi/fastapi/pull/13537) by [@MarinPostma](https://github.com/MarinPostma). ##### Docs - 📝 Add tip on how to install `pip` in case of `No module named pip` error in `virtual-environments.md`. MR [#14211](https://github.com/fastapi/fastapi/pull/14211) by [@zadevhub](https://github.com/zadevhub). - 📝 Update Primary Key notes for the SQL databases tutorial to avoid confusion. MR [#14120](https://github.com/fastapi/fastapi/pull/14120) by [@FlaviusRaducu](https://github.com/FlaviusRaducu). - 📝 Clarify estimation note in documentation. MR [#14070](https://github.com/fastapi/fastapi/pull/14070) by [@SaisakthiM](https://github.com/SaisakthiM). ### [`v0.123.1`](https://github.com/fastapi/fastapi/releases/tag/0.123.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.0...0.123.1) ##### Fixes - 🐛 Avoid accessing non-existing "$ref" key for Pydantic v2 compat remapping. MR [#14361](https://github.com/fastapi/fastapi/pull/14361) by [@svlandeg](https://github.com/svlandeg). - 🐛 Fix `TypeError` when encoding a decimal with a `NaN` or `Infinity` value. MR [#12935](https://github.com/fastapi/fastapi/pull/12935) by [@kentwelcome](https://github.com/kentwelcome). ##### Internal - 🐛 Fix Windows UnicodeEncodeError in CLI test. MR [#14295](https://github.com/fastapi/fastapi/pull/14295) by [@hemanth-thirthahalli](https://github.com/hemanth-thirthahalli). - 🔧 Update sponsors: add Greptile. MR [#14429](https://github.com/fastapi/fastapi/pull/14429) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI GitHub topic repositories. MR [#14426](https://github.com/fastapi/fastapi/pull/14426) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump markdown-include-variants from 0.0.6 to 0.0.7. MR [#14423](https://github.com/fastapi/fastapi/pull/14423) by [@YuriiMotov](https://github.com/YuriiMotov). - 👥 Update FastAPI People - Sponsors. MR [#14422](https://github.com/fastapi/fastapi/pull/14422) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Contributors and Translators. MR [#14420](https://github.com/fastapi/fastapi/pull/14420) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.0`](https://github.com/fastapi/fastapi/releases/tag/0.123.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.122.1...0.123.0) ##### Fixes - 🐛 Cache dependencies that don't use scopes and don't have sub-dependencies with scopes. MR [#14419](https://github.com/fastapi/fastapi/pull/14419) by [@tiangolo](https://github.com/tiangolo). ### [`v0.122.1`](https://github.com/fastapi/fastapi/releases/tag/0.122.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.122.0...0.122.1) ##### Fixes - 🐛 Fix hierarchical security scope propagation. MR [#5624](https://github.com/fastapi/fastapi/pull/5624) by [@kristjanvalur](https://github.com/kristjanvalur). ##### Docs - 💅 Update CSS to explicitly use emoji font. MR [#14415](https://github.com/fastapi/fastapi/pull/14415) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆ Bump markdown-include-variants from 0.0.5 to 0.0.6. MR [#14418](https://github.com/fastapi/fastapi/pull/14418) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.122.0`](https://github.com/fastapi/fastapi/releases/tag/0.122.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.3...0.122.0) ##### Fixes - 🐛 Use `401` status code in security classes when credentials are missing. MR [#13786](https://github.com/fastapi/fastapi/pull/13786) by [@YuriiMotov](https://github.com/YuriiMotov). - If your code depended on these classes raising the old (less correct) `403` status code, check the new docs about how to override the classes, to use the same old behavior: [Use Old 403 Authentication Error Status Codes](https://fastapi.tiangolo.com/how-to/authentication-error-status-code/). ##### Internal - 🔧 Configure labeler to exclude files that start from underscore for `lang-all` label. MR [#14213](https://github.com/fastapi/fastapi/pull/14213) by [@YuriiMotov](https://github.com/YuriiMotov). - 👷 Add pre-commit config with local script for permalinks. MR [#14398](https://github.com/fastapi/fastapi/pull/14398) by [@tiangolo](https://github.com/tiangolo). - 💄 Use font Fira Code to fix display of Rich panels in docs in Windows. MR [#14387](https://github.com/fastapi/fastapi/pull/14387) by [@tiangolo](https://github.com/tiangolo). - 👷 Add custom pre-commit CI. MR [#14397](https://github.com/fastapi/fastapi/pull/14397) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump actions/checkout from 5 to 6. MR [#14381](https://github.com/fastapi/fastapi/pull/14381) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - 👷 Upgrade `latest-changes` GitHub Action and pin `actions/checkout@v5`. MR [#14403](https://github.com/fastapi/fastapi/pull/14403) by [@svlandeg](https://github.com/svlandeg). - 🛠️ Add `add-permalinks` and `add-permalinks-page` to `scripts/docs.py`. MR [#14033](https://github.com/fastapi/fastapi/pull/14033) by [@YuriiMotov](https://github.com/YuriiMotov). - 🔧 Upgrade Material for MkDocs and remove insiders. MR [#14375](https://github.com/fastapi/fastapi/pull/14375) by [@tiangolo](https://github.com/tiangolo). ### [`v0.121.3`](https://github.com/fastapi/fastapi/releases/tag/0.121.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.2...0.121.3) ##### 0.121.3 ##### Refactors - ♻️ Make the result of `Depends()` and `Security()` hashable, as a workaround for other tools interacting with these internal parts. MR [#14372](https://github.com/fastapi/fastapi/pull/14372) by [@tiangolo](https://github.com/tiangolo). ##### Upgrades - ⬆️ Bump Starlette to <`0.51.0`. MR [#14282](https://github.com/fastapi/fastapi/pull/14282) by [@musicinmybrain](https://github.com/musicinmybrain). ##### Docs - 📝 Add missing hash part. MR [#14369](https://github.com/fastapi/fastapi/pull/14369) by [@nilslindemann](https://github.com/nilslindemann). - 📝 Fix typos in code comments. MR [#14364](https://github.com/fastapi/fastapi/pull/14364) by [@Edge-Seven](https://github.com/Edge-Seven). - 📝 Add docs for using FastAPI Cloud. MR [#14359](https://github.com/fastapi/fastapi/pull/14359) by [@tiangolo](https://github.com/tiangolo). ### [`v0.121.2`](https://github.com/fastapi/fastapi/releases/tag/0.121.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.1...0.121.2) ##### Fixes - 🐛 Fix handling of JSON Schema attributes named "$ref". MR [#14349](https://github.com/fastapi/fastapi/pull/14349) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Add EuroPython talk & podcast episode with Sebastián Ramírez. MR [#14260](https://github.com/fastapi/fastapi/pull/14260) by [@clytaemnestra](https://github.com/clytaemnestra). - ✏️ Fix links and add missing permalink in docs. MR [#14217](https://github.com/fastapi/fastapi/pull/14217) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Translations - 🌐 Update Portuguese translations with LLM prompt. MR [#14228](https://github.com/fastapi/fastapi/pull/14228) by [@ceb10n](https://github.com/ceb10n). - 🔨 Add Portuguese translations LLM prompt. MR [#14208](https://github.com/fastapi/fastapi/pull/14208) by [@ceb10n](https://github.com/ceb10n). - 🌐 Sync Russian docs. MR [#14331](https://github.com/fastapi/fastapi/pull/14331) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync German docs. MR [#14317](https://github.com/fastapi/fastapi/pull/14317) by [@nilslindemann](https://github.com/nilslindemann). ### [`v0.121.1`](https://github.com/fastapi/fastapi/releases/tag/0.121.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.0...0.121.1) ##### Fixes - 🐛 Fix `Depends(func, scope='function')` for top level (parameterless) dependencies. MR [#14301](https://github.com/fastapi/fastapi/pull/14301) by [@luzzodev](https://github.com/luzzodev). ##### Docs - 📝 Upate docs for advanced dependencies with `yield`, noting the changes in 0.121.0, adding `scope`. MR [#14287](https://github.com/fastapi/fastapi/pull/14287) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆ Bump ruff from 0.13.2 to 0.14.3. MR [#14276](https://github.com/fastapi/fastapi/pull/14276) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14289](https://github.com/fastapi/fastapi/pull/14289) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). ### [`v0.121.0`](https://github.com/fastapi/fastapi/releases/tag/0.121.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.4...0.121.0) ##### Features - ✨ Add support for dependencies with scopes, support `scope="request"` for dependencies with `yield` that exit before the response is sent. MR [#14262](https://github.com/fastapi/fastapi/pull/14262) by [@tiangolo](https://github.com/tiangolo). - New docs: [Dependencies with `yield` - Early exit and `scope`](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-with-yield/#early-exit-and-scope). ##### Internal - 👥 Update FastAPI People - Contributors and Translators. MR [#14273](https://github.com/fastapi/fastapi/pull/14273) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Sponsors. MR [#14274](https://github.com/fastapi/fastapi/pull/14274) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI GitHub topic repositories. MR [#14280](https://github.com/fastapi/fastapi/pull/14280) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump mkdocs-macros-plugin from 1.4.0 to 1.4.1. MR [#14277](https://github.com/fastapi/fastapi/pull/14277) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump mkdocstrings\[python] from 0.26.1 to 0.30.1. MR [#14279](https://github.com/fastapi/fastapi/pull/14279) by [@dependabot\[bot\]](https://github.com/apps/dependabot). ### [`v0.120.4`](https://github.com/fastapi/fastapi/releases/tag/0.120.4) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.3...0.120.4) ##### Fixes - 🐛 Fix security schemes in OpenAPI when added at the top level app. MR [#14266](https://github.com/fastapi/fastapi/pull/14266) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.120.3`](https://github.com/fastapi/fastapi/releases/tag/0.120.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.2...0.120.3) ##### Refactors - ♻️ Reduce internal cyclic recursion in dependencies, from 2 functions calling each other to 1 calling itself. MR [#14256](https://github.com/fastapi/fastapi/pull/14256) by [@tiangolo](https://github.com/tiangolo). - ♻️ Refactor internals of dependencies, simplify code and remove `get_param_sub_dependant`. MR [#14255](https://github.com/fastapi/fastapi/pull/14255) by [@tiangolo](https://github.com/tiangolo). - ♻️ Refactor internals of dependencies, simplify using dataclasses. MR [#14254](https://github.com/fastapi/fastapi/pull/14254) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Update note for untranslated pages. MR [#14257](https://github.com/fastapi/fastapi/pull/14257) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.120.2`](https://github.com/fastapi/fastapi/releases/tag/0.120.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.1...0.120.2) ##### Fixes - 🐛 Fix separation of schemas with nested models introduced in 0.119.0. MR [#14246](https://github.com/fastapi/fastapi/pull/14246) by [@tiangolo](https://github.com/tiangolo). ##### Internal - 🔧 Add sponsor: SerpApi. MR [#14248](https://github.com/fastapi/fastapi/pull/14248) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump actions/download-artifact from 5 to 6. MR [#14236](https://github.com/fastapi/fastapi/pull/14236) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14237](https://github.com/fastapi/fastapi/pull/14237) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - ⬆ Bump actions/upload-artifact from 4 to 5. MR [#14235](https://github.com/fastapi/fastapi/pull/14235) by [@dependabot\[bot\]](https://github.com/apps/dependabot). ### [`v0.120.1`](https://github.com/fastapi/fastapi/releases/tag/0.120.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.0...0.120.1) ##### Upgrades - ⬆️ Bump Starlette to <`0.50.0`. MR [#14234](https://github.com/fastapi/fastapi/pull/14234) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Internal - 🔧 Add `license` and `license-files` to `pyproject.toml`, remove `License` from `classifiers`. MR [#14230](https://github.com/fastapi/fastapi/pull/14230) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.120.0`](https://github.com/fastapi/fastapi/releases/tag/0.120.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.119.1...0.120.0) There are no major nor breaking changes in this release. ☕️ The internal reference documentation now uses `annotated_doc.Doc` instead of `typing_extensions.Doc`, this adds a new (very small) dependency on [`annotated-doc`](https://github.com/fastapi/annotated-doc), a package made just to provide that `Doc` documentation utility class. I would expect `typing_extensions.Doc` to be deprecated and then removed at some point from `typing_extensions`, for that reason there's the new `annotated-doc` micro-package. If you are curious about this, you can read more in the repo for [`annotated-doc`](https://github.com/fastapi/annotated-doc). This new version `0.120.0` only contains that transition to the new home package for that utility class `Doc`. ##### Translations - 🌐 Sync German docs. MR [#14188](https://github.com/fastapi/fastapi/pull/14188) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - ➕ Migrate internal reference documentation from `typing_extensions.Doc` to `annotated_doc.Doc`. MR [#14222](https://github.com/fastapi/fastapi/pull/14222) by [@tiangolo](https://github.com/tiangolo). - 🛠️ Update German LLM prompt and test file. MR [#14189](https://github.com/fastapi/fastapi/pull/14189) by [@nilslindemann](https://github.com/nilslindemann). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14181](https://github.com/fastapi/fastapi/pull/14181) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). ### [`v0.119.1`](https://github.com/fastapi/fastapi/releases/tag/0.119.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.119.0...0.119.1) ##### Fixes - 🐛 Fix internal Pydantic v1 compatibility (warnings) for Python 3.14 and Pydantic 2.12.1. MR [#14186](https://github.com/fastapi/fastapi/pull/14186) by [@svlandeg](https://github.com/svlandeg). ##### Docs - 📝 Replace `starlette.io` by `starlette.dev` and `uvicorn.org` by `uvicorn.dev`. MR [#14176](https://github.com/fastapi/fastapi/pull/14176) by [@Kludex](https://github.com/Kludex). ##### Internal - 🔧 Add sponsor Requestly. MR [#14205](https://github.com/fastapi/fastapi/pull/14205) by [@tiangolo](https://github.com/tiangolo). - 🔧 Configure reminder for `waiting` label in `issue-manager`. MR [#14156](https://github.com/fastapi/fastapi/pull/14156) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.119.0`](https://github.com/fastapi/fastapi/releases/tag/0.119.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.3...0.119.0) FastAPI now (temporarily) supports both Pydantic v2 models and `pydantic.v1` models at the same time in the same app, to make it easier for any FastAPI apps still using Pydantic v1 to gradually but quickly **migrate to Pydantic v2**. ```Python from fastapi import FastAPI from pydantic import BaseModel as BaseModelV2 from pydantic.v1 import BaseModel class Item(BaseModel): name: str description: str | None = None class ItemV2(BaseModelV2): title: str summary: str | None = None app = FastAPI() @app.post("/items/", response_model=ItemV2) def create_item(item: Item): return {"title": item.name, "summary": item.description} ``` Adding this feature was a big effort with the main objective of making it easier for the few applications still stuck in Pydantic v1 to migrate to Pydantic v2. And with this, support for **Pydantic v1 is now deprecated** and will be **removed** from FastAPI in a future version soon. **Note**: have in mind that the Pydantic team already stopped supporting Pydantic v1 for recent versions of Python, starting with Python 3.14. You can read in the docs more about how to [Migrate from Pydantic v1 to Pydantic v2](https://fastapi.tiangolo.com/how-to/migrate-from-pydantic-v1-to-pydantic-v2/). ##### Features - ✨ Add support for `from pydantic.v1 import BaseModel`, mixed Pydantic v1 and v2 models in the same app. MR [#14168](https://github.com/fastapi/fastapi/pull/14168) by [@tiangolo](https://github.com/tiangolo). ### [`v0.118.3`](https://github.com/fastapi/fastapi/releases/tag/0.118.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.2...0.118.3) ##### Upgrades - ⬆️ Add support for Python 3.14. MR [#14165](https://github.com/fastapi/fastapi/pull/14165) by [@svlandeg](https://github.com/svlandeg). ### [`v0.118.2`](https://github.com/fastapi/fastapi/releases/tag/0.118.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.1...0.118.2) ##### Fixes - 🐛 Fix tagged discriminated union not recognized as body field. MR [#12942](https://github.com/fastapi/fastapi/pull/12942) by [@frankie567](https://github.com/frankie567). ##### Internal - ⬆ Bump astral-sh/setup-uv from 6 to 7. MR [#14167](https://github.com/fastapi/fastapi/pull/14167) by [@dependabot\[bot\]](https://github.com/apps/dependabot). ### [`v0.118.1`](https://github.com/fastapi/fastapi/releases/tag/0.118.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.0...0.118.1) ##### Upgrades - 👽️ Ensure compatibility with Pydantic 2.12.0. MR [#14036](https://github.com/fastapi/fastapi/pull/14036) by [@cjwatson](https://github.com/cjwatson). ##### Docs - 📝 Add External Link: Getting started with logging in FastAPI. MR [#14152](https://github.com/fastapi/fastapi/pull/14152) by [@itssimon](https://github.com/itssimon). ##### Translations - 🔨 Add Russian translations LLM prompt. MR [#13936](https://github.com/fastapi/fastapi/pull/13936) by [@tiangolo](https://github.com/tiangolo). - 🌐 Sync German docs. MR [#14149](https://github.com/fastapi/fastapi/pull/14149) by [@nilslindemann](https://github.com/nilslindemann). - 🌐 Add Russian translations for missing pages (LLM-generated). MR [#14135](https://github.com/fastapi/fastapi/pull/14135) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Update Russian translations for existing pages (LLM-generated). MR [#14123](https://github.com/fastapi/fastapi/pull/14123) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Remove configuration files for inactive translations. MR [#14130](https://github.com/fastapi/fastapi/pull/14130) by [@tiangolo](https://github.com/tiangolo). ##### Internal - 🔨 Move local coverage logic to its own script. MR [#14166](https://github.com/fastapi/fastapi/pull/14166) by [@tiangolo](https://github.com/tiangolo). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14161](https://github.com/fastapi/fastapi/pull/14161) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - ⬆ Bump griffe-typingdoc from 0.2.8 to 0.2.9. MR [#14144](https://github.com/fastapi/fastapi/pull/14144) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump mkdocs-macros-plugin from 1.3.9 to 1.4.0. MR [#14145](https://github.com/fastapi/fastapi/pull/14145) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump markdown-include-variants from 0.0.4 to 0.0.5. MR [#14146](https://github.com/fastapi/fastapi/pull/14146) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14126](https://github.com/fastapi/fastapi/pull/14126) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - 👥 Update FastAPI GitHub topic repositories. MR [#14150](https://github.com/fastapi/fastapi/pull/14150) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Sponsors. MR [#14139](https://github.com/fastapi/fastapi/pull/14139) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Contributors and Translators. MR [#14138](https://github.com/fastapi/fastapi/pull/14138) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump ruff from 0.12.7 to 0.13.2. MR [#14147](https://github.com/fastapi/fastapi/pull/14147) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump sqlmodel from 0.0.24 to 0.0.25. MR [#14143](https://github.com/fastapi/fastapi/pull/14143) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump tiangolo/issue-manager from 0.5.1 to 0.6.0. MR [#14148](https://github.com/fastapi/fastapi/pull/14148) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - 👷 Update docs previews comment, single comment, add failure status. MR [#14129](https://github.com/fastapi/fastapi/pull/14129) by [@tiangolo](https://github.com/tiangolo). - 🔨 Modify `mkdocs_hooks.py` to add `title` to page's metadata (remove permalinks in social cards). MR [#14125](https://github.com/fastapi/fastapi/pull/14125) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.118.0`](https://github.com/fastapi/fastapi/releases/tag/0.118.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.117.1...0.118.0) ##### 0.118.0 ##### Fixes - 🐛 Fix support for `StreamingResponse`s with dependencies with `yield` or `UploadFile`s, close after the response is done. MR [#14099](https://github.com/fastapi/fastapi/pull/14099) by [@tiangolo](https://github.com/tiangolo). Before FastAPI 0.118.0, if you used a dependency with `yield`, it would run the exit code after the *path operation function* returned but right before sending the response. This change also meant that if you returned a `StreamingResponse`, the exit code of the dependency with `yield` would have been already run. For example, if you had a database session in a dependency with `yield`, the `StreamingResponse` would not be able to use that session while streaming data because the session would have already been closed in the exit code after `yield`. This behavior was reverted in 0.118.0, to make the exit code after `yield` be executed after the response is sent. You can read more about it in the docs for [Advanced Dependencies - Dependencies with `yield`, `HTTPException`, `except` and Background Tasks](https://fastapi.tiangolo.com/advanced/advanced-dependencies#dependencies-with-yield-httpexception-except-and-background-tasks). Including what you could do if you wanted to close a database session earlier, before returning the response to the client. ##### Docs - 📝 Update `tutorial/security/oauth2-jwt/` to use `pwdlib` with Argon2 instead of `passlib`. MR [#13917](https://github.com/fastapi/fastapi/pull/13917) by [@Neizvestnyj](https://github.com/Neizvestnyj). - ✏️ Fix typos in OAuth2 password request forms. MR [#14112](https://github.com/fastapi/fastapi/pull/14112) by [@alv2017](https://github.com/alv2017). - 📝 Update contributing guidelines for installing requirements. MR [#14095](https://github.com/fastapi/fastapi/pull/14095) by [@alejsdev](https://github.com/alejsdev). ##### Translations - 🌐 Sync German docs. MR [#14098](https://github.com/fastapi/fastapi/pull/14098) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14103](https://github.com/fastapi/fastapi/pull/14103) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - ♻️ Refactor sponsor image handling. MR [#14102](https://github.com/fastapi/fastapi/pull/14102) by [@alejsdev](https://github.com/alejsdev). - 🐛 Fix sponsor display issue by hiding element on image error. MR [#14097](https://github.com/fastapi/fastapi/pull/14097) by [@alejsdev](https://github.com/alejsdev). - 🐛 Hide sponsor badge when sponsor image is not displayed. MR [#14096](https://github.com/fastapi/fastapi/pull/14096) by [@alejsdev](https://github.com/alejsdev). ### [`v0.117.1`](https://github.com/fastapi/fastapi/releases/tag/0.117.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.117.0...0.117.1) ##### Fixes - 🐛 Fix validation error when `File` is declared after `Form` parameter. MR [#11194](https://github.com/fastapi/fastapi/pull/11194) by [@thomasleveil](https://github.com/thomasleveil). ### [`v0.117.0`](https://github.com/fastapi/fastapi/releases/tag/0.117.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.116.2...0.117.0) ##### Features - ✨ Allow `None` as return type for bodiless responses. MR [#9425](https://github.com/fastapi/fastapi/pull/9425) by [@hofrob](https://github.com/hofrob). - ✨ Allow array values for OpenAPI schema `type` field. MR [#13639](https://github.com/fastapi/fastapi/pull/13639) by [@sammasak](https://github.com/sammasak). - ✨ Add OpenAPI `external_docs` parameter to `FastAPI`. MR [#13713](https://github.com/fastapi/fastapi/pull/13713) by [@cmtoro](https://github.com/cmtoro). ##### Fixes - ⚡️ Fix `default_factory` for response model field with Pydantic V1. MR [#9704](https://github.com/fastapi/fastapi/pull/9704) by [@vvanglro](https://github.com/vvanglro). - 🐛 Fix inconsistent processing of model docstring formfeed char with Pydantic V1. MR [#6039](https://github.com/fastapi/fastapi/pull/6039) by [@MaxwellPayne](https://github.com/MaxwellPayne). - 🐛 Fix `jsonable_encoder` alters `json_encoders` of Pydantic v1 objects. MR [#4972](https://github.com/fastapi/fastapi/pull/4972) by [@aboubacs](https://github.com/aboubacs). - 🐛 Reenable `allow_arbitrary_types` when only 1 argument is used on the API endpoint. MR [#13694](https://github.com/fastapi/fastapi/pull/13694) by [@rmawatson](https://github.com/rmawatson). - 🐛 Fix `inspect.getcoroutinefunction()` can break testing with `unittest.mock.patch()`. MR [#14022](https://github.com/fastapi/fastapi/pull/14022) by [@secrett2633](https://github.com/secrett2633). ##### Refactors - ♻️ Create `dependency-cache` dict in `solve_dependencies` only if `None` (don't re-create if empty). MR [#13689](https://github.com/fastapi/fastapi/pull/13689) by [@bokshitsky](https://github.com/bokshitsky). - ✅ Enable test case for duplicated headers in `test_tutorial/test_header_params/test_tutorial003.py`. MR [#13864](https://github.com/fastapi/fastapi/pull/13864) by [@Amogha-ark](https://github.com/Amogha-ark). - 📌 Pin `httpx` to `>=0.23.0,<1.0.0`. MR [#14086](https://github.com/fastapi/fastapi/pull/14086) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Docs - 📝 Add note about Cookies and JavaScript on `tutorial/cookie-params.md`. MR [#13510](https://github.com/fastapi/fastapi/pull/13510) by [@Kludex](https://github.com/Kludex). - 📝 Remove outdated formatting from `path-params-numeric-validations.md` for languages `en`, `es` and `uk`.. MR [#14059](https://github.com/fastapi/fastapi/pull/14059) by [@svlandeg](https://github.com/svlandeg). - 📝 Fix and Improve English Documentation. MR [#14048](https://github.com/fastapi/fastapi/pull/14048) by [@nilslindemann](https://github.com/nilslindemann). ##### Translations - 📝 Update prompts and German translation. MR [#14015](https://github.com/fastapi/fastapi/pull/14015) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - ✅ Simplify tests for response\_model. MR [#14062](https://github.com/fastapi/fastapi/pull/14062) by [@dynamicy](https://github.com/dynamicy). - 🚨 Install pydantic.mypy plugin. MR [#14081](https://github.com/fastapi/fastapi/pull/14081) by [@svlandeg](https://github.com/svlandeg). - ✅ Add LLM test file. MR [#14049](https://github.com/fastapi/fastapi/pull/14049) by [@nilslindemann](https://github.com/nilslindemann). - 🔨 Update translations script. MR [#13968](https://github.com/fastapi/fastapi/pull/13968) by [@YuriiMotov](https://github.com/YuriiMotov). - 🛠️ Update `docs.py generate-readme` command to remove permalinks from headers. MR [#14055](https://github.com/fastapi/fastapi/pull/14055) by [@YuriiMotov](https://github.com/YuriiMotov). - ⬆️ Update mypy to 1.14.1. MR [#12970](https://github.com/fastapi/fastapi/pull/12970) by [@tamird](https://github.com/tamird). ### [`v0.116.2`](https://github.com/fastapi/fastapi/releases/tag/0.116.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.116.1...0.116.2) ##### Upgrades - ⬆️ Upgrade Starlette supported version range to >=0.40.0,<0.49.0. MR [#14077](https://github.com/fastapi/fastapi/pull/14077) by [@musicinmybrain](https://github.com/musicinmybrain). ##### Docs - 📝 Add documentation for Behind a Proxy - Proxy Forwarded Headers, using `--forwarded-allow-ips="*"`. MR [#14028](https://github.com/fastapi/fastapi/pull/14028) by [@tiangolo](https://github.com/tiangolo). - 📝 Add deprecation info block about `dict()` in `docs/tutorial/body.md`. MR [#13906](https://github.com/fastapi/fastapi/pull/13906) by [@jomkv](https://github.com/jomkv). - 📝 Fix Twitter to be X (Twitter) everywhere in documentation. MR [#13809](https://gith…

fix(deps): update backend dependencies (minor) (minor) This MR contains the following updates: | Package | Type | Update | Change | OpenSSF | |---|---|---|---|---| | [celery](https://docs.celeryq.dev/) ([source](https://github.com/celery/celery), [changelog](https://docs.celeryq.dev/en/stable/changelog.html)) | dependencies | minor | `5.5.3` → `5.6.2` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/celery/celery/badge)](https://securityscorecards.dev/viewer/?uri=github.com/celery/celery) | | [celery-types](https://github.com/sbdchd/celery-types) | dependencies | minor | `^0.22.0` → `^0.24.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/sbdchd/celery-types/badge)](https://securityscorecards.dev/viewer/?uri=github.com/sbdchd/celery-types) | | [fastapi](https://github.com/fastapi/fastapi) ([changelog](https://fastapi.tiangolo.com/release-notes/)) | dependencies | minor | `^0.115.12` → `^0.128.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/fastapi/fastapi/badge)](https://securityscorecards.dev/viewer/?uri=github.com/fastapi/fastapi) | | [filelock](https://github.com/tox-dev/py-filelock) | dependencies | minor | `3.14.0` → `3.20.3` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/tox-dev/py-filelock/badge)](https://securityscorecards.dev/viewer/?uri=github.com/tox-dev/py-filelock) | | [luqum](https://github.com/jurismarches/luqum) | dependencies | minor | `^0.13.0` → `^0.14.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/jurismarches/luqum/badge)](https://securityscorecards.dev/viewer/?uri=github.com/jurismarches/luqum) | | [ollama](https://github.com/ollama/ollama-python) | dependencies | minor | `^0.5.1` → `^0.6.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/ollama/ollama-python/badge)](https://securityscorecards.dev/viewer/?uri=github.com/ollama/ollama-python) | | [pycryptodome](https://www.pycryptodome.org) ([source](https://github.com/Legrandin/pycryptodome), [changelog](https://www.pycryptodome.org/src/changelog)) | dependencies | minor | `3.20.0` → `3.23.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/Legrandin/pycryptodome/badge)](https://securityscorecards.dev/viewer/?uri=github.com/Legrandin/pycryptodome) | | [pydantic-mongo](https://github.com/jefersondaniel/pydantic-mongo) | dependencies | minor | `2.3.0` → `2.4.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/jefersondaniel/pydantic-mongo/badge)](https://securityscorecards.dev/viewer/?uri=github.com/jefersondaniel/pydantic-mongo) | | [pydantic-settings](https://github.com/pydantic/pydantic-settings) ([changelog](https://github.com/pydantic/pydantic-settings/releases)) | dependencies | minor | `2.2.1` → `2.12.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/pydantic/pydantic-settings/badge)](https://securityscorecards.dev/viewer/?uri=github.com/pydantic/pydantic-settings) | | [pymongo](https://github.com/mongodb/mongo-python-driver) | dependencies | minor | `4.15.5` → `4.16.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/mongodb/mongo-python-driver/badge)](https://securityscorecards.dev/viewer/?uri=github.com/mongodb/mongo-python-driver) | | [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) ([changelog](https://pytest-asyncio.readthedocs.io/en/latest/reference/changelog.html)) | dependencies | minor | `^0.23.6` → `^0.26.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/pytest-dev/pytest-asyncio/badge)](https://securityscorecards.dev/viewer/?uri=github.com/pytest-dev/pytest-asyncio) | | [pytest-timeout](https://github.com/pytest-dev/pytest-timeout) | dependencies | minor | `2.3.1` → `2.4.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/pytest-dev/pytest-timeout/badge)](https://securityscorecards.dev/viewer/?uri=github.com/pytest-dev/pytest-timeout) | | [scikit-learn](https://github.com/scikit-learn/scikit-learn) ([changelog](https://scikit-learn.org/stable/whats_new)) | dependencies | minor | `1.7.0` → `1.8.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/scikit-learn/scikit-learn/badge)](https://securityscorecards.dev/viewer/?uri=github.com/scikit-learn/scikit-learn) | | [scikit-learn](https://github.com/scikit-learn/scikit-learn) ([changelog](https://scikit-learn.org/stable/whats_new)) | dependencies | minor | `1.6.1` → `1.8.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/scikit-learn/scikit-learn/badge)](https://securityscorecards.dev/viewer/?uri=github.com/scikit-learn/scikit-learn) | | [scipy](https://github.com/scipy/scipy) | dependencies | minor | `1.15.3` → `1.17.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/scipy/scipy/badge)](https://securityscorecards.dev/viewer/?uri=github.com/scipy/scipy) | | [uvicorn](https://github.com/Kludex/uvicorn) ([changelog](https://uvicorn.dev/release-notes)) | dependencies | minor | `^0.29.0` → `^0.40.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/Kludex/uvicorn/badge)](https://securityscorecards.dev/viewer/?uri=github.com/Kludex/uvicorn) | --- ### Release Notes <details> <summary>celery/celery (celery)</summary> ### [`v5.6.2`](https://github.com/celery/celery/blob/HEAD/Changelog.rst#562) [Compare Source](https://github.com/celery/celery/compare/v5.6.1...v5.6.2) \===== :release-date: 2026-01-04 :release-by: Tomer Nosrati What's Changed ``` - Fix recursive WorkController instantiation in DjangoWorkerFixup + AttributeError when pool_cls is a string (#10045) - Bugfix: Revoked tasks now immediately update backend status to REVOKED (#9869) - Prepare for release: v5.6.2 (#10049) .. _version-5.6.1: 5.6.1 ===== :release-date: 2025-12-29 :release-by: Tomer Nosrati What's Changed ``` - Fix Redis Sentinel ACL authentication support ([#10013](https://github.com/celery/celery/issues/10013)) - Fix: Broker heartbeats not sent during graceful shutdown ([#9986](https://github.com/celery/celery/issues/9986)) - docs [#5410](https://github.com/celery/celery/issues/5410) -- Document confirm\_publish broker transport option ([#10016](https://github.com/celery/celery/issues/10016)) - close DB pools only in prefork mode ([#10020](https://github.com/celery/celery/issues/10020)) - Fix: Avoid unnecessary Django database connection creation during cleanup ([#10015](https://github.com/celery/celery/issues/10015)) - reliable prefork detection ([#10023](https://github.com/celery/celery/issues/10023)) - better coverage ([#10029](https://github.com/celery/celery/issues/10029)) - Docs: clarify `result_extended` vs periodic task metadata and show `headers["periodic_task_name"]` example ([#10030](https://github.com/celery/celery/issues/10030)) - Stop importing pytest\_subtests ([#10032](https://github.com/celery/celery/issues/10032)) - Only use exceptiongroup backport for Python < 3.11 ([#10033](https://github.com/celery/celery/issues/10033)) - Prepare for release: v5.6.1 ([#10037](https://github.com/celery/celery/issues/10037)) .. \_version-5.6.0: ### [`v5.6.1`](https://github.com/celery/celery/releases/tag/v5.6.1) [Compare Source](https://github.com/celery/celery/compare/v5.6.0...v5.6.1) #### What's Changed - Fix Redis Sentinel ACL authentication support by [@anthonykuzmich7](https://github.com/anthonykuzmich7) in [#10013](https://github.com/celery/celery/pull/10013) - Fix: Broker heartbeats not sent during graceful shutdown by [@weetster](https://github.com/weetster) in [#9986](https://github.com/celery/celery/pull/9986) - docs [#5410](https://github.com/celery/celery/issues/5410) -- Document confirm\_publish broker transport option by [@JaeHyuckSa](https://github.com/JaeHyuckSa) in [#10016](https://github.com/celery/celery/pull/10016) - close DB pools only in prefork mode by [@petrprikryl](https://github.com/petrprikryl) in [#10020](https://github.com/celery/celery/pull/10020) - Fix: Avoid unnecessary Django database connection creation during cleanup by [@snopoke](https://github.com/snopoke) in [#10015](https://github.com/celery/celery/pull/10015) - reliable prefork detection by [@petrprikryl](https://github.com/petrprikryl) in [#10023](https://github.com/celery/celery/pull/10023) - better coverage by [@petrprikryl](https://github.com/petrprikryl) in [#10029](https://github.com/celery/celery/pull/10029) - Docs: clarify `result_extended` vs periodic task metadata and show `headers["periodic_task_name"]` example by [@SpaceShaman](https://github.com/SpaceShaman) in [#10030](https://github.com/celery/celery/pull/10030) - Stop importing pytest\_subtests by [@cjwatson](https://github.com/cjwatson) in [#10032](https://github.com/celery/celery/pull/10032) - Only use exceptiongroup backport for Python < 3.11 by [@cjwatson](https://github.com/cjwatson) in [#10033](https://github.com/celery/celery/pull/10033) - Prepare for release: v5.6.1 by [@Nusnus](https://github.com/Nusnus) in [#10037](https://github.com/celery/celery/pull/10037) #### New Contributors - [@anthonykuzmich7](https://github.com/anthonykuzmich7) made their first contribution in [#10013](https://github.com/celery/celery/pull/10013) - [@weetster](https://github.com/weetster) made their first contribution in [#9986](https://github.com/celery/celery/pull/9986) - [@JaeHyuckSa](https://github.com/JaeHyuckSa) made their first contribution in [#10016](https://github.com/celery/celery/pull/10016) - [@snopoke](https://github.com/snopoke) made their first contribution in [#10015](https://github.com/celery/celery/pull/10015) - [@SpaceShaman](https://github.com/SpaceShaman) made their first contribution in [#10030](https://github.com/celery/celery/pull/10030) **Full Changelog**: <https://github.com/celery/celery/compare/v5.6.0...v5.6.1> ### [`v5.6.0`](https://github.com/celery/celery/blob/HEAD/Changelog.rst#560) [Compare Source](https://github.com/celery/celery/compare/v5.5.3...v5.6.0) \===== :release-date: 2025-11-30 :release-by: Tomer Nosrati Celery v5.6.0 is now available. Key Highlights ``` See :ref:`whatsnew-5.6` for a complete overview or read the main highlights below. Python 3.9 Minimum Version -------------------------- Celery 5.6.0 drops support for Python 3.8 (EOL). The minimum required Python version is now 3.9. Users still on Python 3.8 must upgrade their Python version before upgrading to Celery 5.6.0. Additionally, this release includes initial support for Python 3.14. SQS: Reverted to ``pycurl`` from ``urllib3`` -------------------------------------------- The switch from ``pycurl`` to ``urllib3`` for the SQS transport (introduced in Celery 5.5.0 via Kombu) has been reverted due to critical issues affecting SQS users: - Processing throughput dropped from ~100 tasks/sec to ~3/sec in some environments - ``UnknownOperationException`` errors causing container crash loops - Silent message processing failures with no error logs Users of the SQS transport must ensure ``pycurl`` is installed. If you removed ``pycurl`` after upgrading to Celery 5.5.0, you will need to reinstall it. Contributed by `@auvipy <https://github.com/auvipy>`_ in `#9620 <https://github.com/celery/celery/pull/9620>`_. Security Fix: Broker Credential Leak Prevention ------------------------------------------------ Fixed a security issue where broker URLs containing passwords were being logged in plaintext by the delayed delivery mechanism. Broker credentials are now properly sanitized in all log output. Contributed by `@giancarloromeo <https://github.com/giancarloromeo>`_ in `#9997 <https://github.com/celery/celery/pull/9997>`_. Memory Leak Fixes ----------------- Two significant memory leaks have been fixed in this release: **Exception Handling Memory Leak**: Fixed a critical memory leak in task exception handling that was particularly severe on Python 3.11+ due to enhanced traceback data. The fix properly breaks reference cycles in tracebacks to allow garbage collection. Contributed by `@jaiganeshs21 <https://github.com/jaiganeshs21>`_ in `#9799 <https://github.com/celery/celery/pull/9799>`_. **Pending Result Memory Leak**: Fixed a memory leak where ``AsyncResult`` subscriptions were not being cleaned up when results were forgotten. Contributed by `@tsoos99dev <https://github.com/tsoos99dev>`_ in `#9806 <https://github.com/celery/celery/pull/9806>`_. ETA Task Memory Limit --------------------- New configuration option :setting:`worker_eta_task_limit` to prevent out-of-memory crashes when workers fetch large numbers of ETA or countdown tasks. Previously, workers could exhaust available memory when the broker contained many scheduled tasks. Example usage: .. code-block:: python app.conf.worker_eta_task_limit = 1000 Contributed by `@sashu2310 <https://github.com/sashu2310>`_ in `#9853 <https://github.com/celery/celery/pull/9853>`_. Queue Type Selection for Auto-created Queues -------------------------------------------- New configuration options allow specifying the queue type and exchange type when Celery auto-creates missing queues. This is particularly useful for RabbitMQ users who want to use quorum queues with auto-created queues. Configuration options: - :setting:`task_create_missing_queue_type`: Sets the queue type for auto-created queues (e.g., ``quorum``, ``classic``) - :setting:`task_create_missing_queue_exchange_type`: Sets the exchange type for auto-created queues Example usage: .. code-block:: python app.conf.task_create_missing_queue_type = 'quorum' Contributed by `@ghirailghiro <https://github.com/ghirailghiro>`_ in `#9815 <https://github.com/celery/celery/pull/9815>`_. What's Changed ``` - Prepare for release: v5.6.0 ([#10010](https://github.com/celery/celery/issues/10010)) .. \_version-5.6.0rc2: </details> <details> <summary>fastapi/fastapi (fastapi)</summary> ### [`v0.128.0`](https://github.com/fastapi/fastapi/releases/tag/0.128.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.127.1...0.128.0) ##### Breaking Changes - ➖ Drop support for `pydantic.v1`. MR [#14609](https://github.com/fastapi/fastapi/pull/14609) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ✅ Run performance tests only on Pydantic v2. MR [#14608](https://github.com/fastapi/fastapi/pull/14608) by [@tiangolo](https://github.com/tiangolo). ### [`v0.127.1`](https://github.com/fastapi/fastapi/releases/tag/0.127.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.127.0...0.127.1) ##### Refactors - 🔊 Add a custom `FastAPIDeprecationWarning`. MR [#14605](https://github.com/fastapi/fastapi/pull/14605) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Add documentary to website. MR [#14600](https://github.com/fastapi/fastapi/pull/14600) by [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Update translations for de (update-outdated). MR [#14602](https://github.com/fastapi/fastapi/pull/14602) by [@nilslindemann](https://github.com/nilslindemann). - 🌐 Update translations for de (update-outdated). MR [#14581](https://github.com/fastapi/fastapi/pull/14581) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - 🔧 Update pre-commit to use local Ruff instead of hook. MR [#14604](https://github.com/fastapi/fastapi/pull/14604) by [@tiangolo](https://github.com/tiangolo). - ✅ Add missing tests for code examples. MR [#14569](https://github.com/fastapi/fastapi/pull/14569) by [@YuriiMotov](https://github.com/YuriiMotov). - 👷 Remove `lint` job from `test` CI workflow. MR [#14593](https://github.com/fastapi/fastapi/pull/14593) by [@YuriiMotov](https://github.com/YuriiMotov). - 👷 Update secrets check. MR [#14592](https://github.com/fastapi/fastapi/pull/14592) by [@tiangolo](https://github.com/tiangolo). - 👷 Run CodSpeed tests in parallel to other tests to speed up CI. MR [#14586](https://github.com/fastapi/fastapi/pull/14586) by [@tiangolo](https://github.com/tiangolo). - 🔨 Update scripts and pre-commit to autofix files. MR [#14585](https://github.com/fastapi/fastapi/pull/14585) by [@tiangolo](https://github.com/tiangolo). ### [`v0.127.0`](https://github.com/fastapi/fastapi/releases/tag/0.127.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.126.0...0.127.0) ##### Breaking Changes - 🔊 Add deprecation warnings when using `pydantic.v1`. MR [#14583](https://github.com/fastapi/fastapi/pull/14583) by [@tiangolo](https://github.com/tiangolo). ##### Translations - 🔧 Add LLM prompt file for Korean, generated from the existing translations. MR [#14546](https://github.com/fastapi/fastapi/pull/14546) by [@tiangolo](https://github.com/tiangolo). - 🔧 Add LLM prompt file for Japanese, generated from the existing translations. MR [#14545](https://github.com/fastapi/fastapi/pull/14545) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆️ Upgrade OpenAI model for translations to gpt-5.2. MR [#14579](https://github.com/fastapi/fastapi/pull/14579) by [@tiangolo](https://github.com/tiangolo). ### [`v0.126.0`](https://github.com/fastapi/fastapi/releases/tag/0.126.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.125.0...0.126.0) ##### Upgrades - ➖ Drop support for Pydantic v1, keeping short temporary support for Pydantic v2's `pydantic.v1`. MR [#14575](https://github.com/fastapi/fastapi/pull/14575) by [@tiangolo](https://github.com/tiangolo). - The minimum version of Pydantic installed is now `pydantic >=2.7.0`. - The `standard` dependencies now include `pydantic-settings >=2.0.0` and `pydantic-extra-types >=2.0.0`. ##### Docs - 📝 Fix duplicated variable in `docs_src/python_types/tutorial005_py39.py`. MR [#14565](https://github.com/fastapi/fastapi/pull/14565) by [@paras-verma7454](https://github.com/paras-verma7454). ##### Translations - 🔧 Add LLM prompt file for Ukrainian, generated from the existing translations. MR [#14548](https://github.com/fastapi/fastapi/pull/14548) by [@tiangolo](https://github.com/tiangolo). ##### Internal - 🔧 Tweak pre-commit to allow committing release-notes. MR [#14577](https://github.com/fastapi/fastapi/pull/14577) by [@tiangolo](https://github.com/tiangolo). - ⬆️ Use prek as a pre-commit alternative. MR [#14572](https://github.com/fastapi/fastapi/pull/14572) by [@tiangolo](https://github.com/tiangolo). - 👷 Add performance tests with CodSpeed. MR [#14558](https://github.com/fastapi/fastapi/pull/14558) by [@tiangolo](https://github.com/tiangolo). ### [`v0.125.0`](https://github.com/fastapi/fastapi/releases/tag/0.125.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.4...0.125.0) ##### Breaking Changes - 🔧 Drop support for Python 3.8. MR [#14563](https://github.com/fastapi/fastapi/pull/14563) by [@tiangolo](https://github.com/tiangolo). - This would actually not be a *breaking* change as no code would really break. Any Python 3.8 installer would just refuse to install the latest version of FastAPI and would only install 0.124.4. Only marking it as a "breaking change" to make it visible. ##### Refactors - ♻️ Upgrade internal syntax to Python 3.9+ 🎉. MR [#14564](https://github.com/fastapi/fastapi/pull/14564) by [@tiangolo](https://github.com/tiangolo). ##### Docs - ⚰️ Remove Python 3.8 from CI and remove Python 3.8 examples from source docs. MR [#14559](https://github.com/fastapi/fastapi/pull/14559) by [@YuriiMotov](https://github.com/YuriiMotov) and [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Update translations for pt (add-missing). MR [#14539](https://github.com/fastapi/fastapi/pull/14539) by [@tiangolo](https://github.com/tiangolo). - 🔧 Add LLM prompt file for French, generated from the existing French docs. MR [#14544](https://github.com/fastapi/fastapi/pull/14544) by [@tiangolo](https://github.com/tiangolo). - 🌐 Sync Portuguese docs (pages found with script). MR [#14554](https://github.com/fastapi/fastapi/pull/14554) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync Spanish docs (outdated pages found with script). MR [#14553](https://github.com/fastapi/fastapi/pull/14553) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync German docs. MR [#14519](https://github.com/fastapi/fastapi/pull/14519) by [@nilslindemann](https://github.com/nilslindemann). - 🔥 Remove inactive/scarce translations to Vietnamese. MR [#14543](https://github.com/fastapi/fastapi/pull/14543) by [@tiangolo](https://github.com/tiangolo). - 🔥 Remove inactive/scarce translations to Persian. MR [#14542](https://github.com/fastapi/fastapi/pull/14542) by [@tiangolo](https://github.com/tiangolo). - 🔥 Remove translation to emoji to simplify the new setup with LLM autotranslations. MR [#14541](https://github.com/fastapi/fastapi/pull/14541) by [@tiangolo](https://github.com/tiangolo). - 🌐 Update translations for pt (update-outdated). MR [#14537](https://github.com/fastapi/fastapi/pull/14537) by [@tiangolo](https://github.com/tiangolo). - 🌐 Update translations for es (update-outdated). MR [#14532](https://github.com/fastapi/fastapi/pull/14532) by [@tiangolo](https://github.com/tiangolo). - 🌐 Update translations for es (add-missing). MR [#14533](https://github.com/fastapi/fastapi/pull/14533) by [@tiangolo](https://github.com/tiangolo). - 🌐 Remove translations for removed docs. MR [#14516](https://github.com/fastapi/fastapi/pull/14516) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆ Bump `markdown-include-variants` from 0.0.7 to 0.0.8. MR [#14556](https://github.com/fastapi/fastapi/pull/14556) by [@YuriiMotov](https://github.com/YuriiMotov). - 🔧 Temporarily disable translations still in progress, being migrated to the new LLM setup. MR [#14555](https://github.com/fastapi/fastapi/pull/14555) by [@YuriiMotov](https://github.com/YuriiMotov). - 🔧 Update test workflow config, remove commented code. MR [#14540](https://github.com/fastapi/fastapi/pull/14540) by [@tiangolo](https://github.com/tiangolo). - 👷 Configure coverage, error on main tests, don't wait for Smokeshow. MR [#14536](https://github.com/fastapi/fastapi/pull/14536) by [@tiangolo](https://github.com/tiangolo). - 👷 Run Smokeshow always, even on test failures. MR [#14538](https://github.com/fastapi/fastapi/pull/14538) by [@tiangolo](https://github.com/tiangolo). - 👷 Make Pydantic versions customizable in CI. MR [#14535](https://github.com/fastapi/fastapi/pull/14535) by [@tiangolo](https://github.com/tiangolo). - 👷 Fix checkout GitHub Action fetch-depth for LLM translations, enable cron monthly. MR [#14531](https://github.com/fastapi/fastapi/pull/14531) by [@tiangolo](https://github.com/tiangolo). - 👷 Fix Typer command for CI LLM translations. MR [#14530](https://github.com/fastapi/fastapi/pull/14530) by [@tiangolo](https://github.com/tiangolo). - 👷 Update LLM translation CI, add language matrix and extra commands, prepare for scheduled run. MR [#14529](https://github.com/fastapi/fastapi/pull/14529) by [@tiangolo](https://github.com/tiangolo). - 👷 Update github-actions user for GitHub Actions workflows. MR [#14528](https://github.com/fastapi/fastapi/pull/14528) by [@tiangolo](https://github.com/tiangolo). - ➕ Add requirements for translations. MR [#14515](https://github.com/fastapi/fastapi/pull/14515) by [@tiangolo](https://github.com/tiangolo). ### [`v0.124.4`](https://github.com/fastapi/fastapi/releases/tag/0.124.4) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.3...0.124.4) ##### Fixes - 🐛 Fix parameter aliases. MR [#14371](https://github.com/fastapi/fastapi/pull/14371) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.124.3`](https://github.com/fastapi/fastapi/releases/tag/0.124.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.2...0.124.3) ##### Fixes - 🐛 Fix support for tagged union with discriminator inside of `Annotated` with `Body()`. MR [#14512](https://github.com/fastapi/fastapi/pull/14512) by [@tiangolo](https://github.com/tiangolo). ##### Refactors - ✅ Add set of tests for request parameters and alias. MR [#14358](https://github.com/fastapi/fastapi/pull/14358) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Docs - 📝 Tweak links format. MR [#14505](https://github.com/fastapi/fastapi/pull/14505) by [@tiangolo](https://github.com/tiangolo). - 📝 Update docs about re-raising validation errors, do not include string as is to not leak information. MR [#14487](https://github.com/fastapi/fastapi/pull/14487) by [@tiangolo](https://github.com/tiangolo). - 🔥 Remove external links section. MR [#14486](https://github.com/fastapi/fastapi/pull/14486) by [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Sync Russian docs. MR [#14509](https://github.com/fastapi/fastapi/pull/14509) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync German docs. MR [#14488](https://github.com/fastapi/fastapi/pull/14488) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - 👷 Tweak coverage to not pass Smokeshow max file size limit. MR [#14507](https://github.com/fastapi/fastapi/pull/14507) by [@tiangolo](https://github.com/tiangolo). - ✅ Expand test matrix to include Windows and MacOS. MR [#14171](https://github.com/fastapi/fastapi/pull/14171) by [@svlandeg](https://github.com/svlandeg). ### [`v0.124.2`](https://github.com/fastapi/fastapi/releases/tag/0.124.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.1...0.124.2) ##### Fixes - 🐛 Fix support for `if TYPE_CHECKING`, non-evaluated stringified annotations. MR [#14485](https://github.com/fastapi/fastapi/pull/14485) by [@tiangolo](https://github.com/tiangolo). ### [`v0.124.1`](https://github.com/fastapi/fastapi/releases/tag/0.124.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.124.0...0.124.1) ##### Fixes - 🐛 Fix handling arbitrary types when using `arbitrary_types_allowed=True`. MR [#14482](https://github.com/fastapi/fastapi/pull/14482) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Add variants for code examples in "Advanced User Guide". MR [#14413](https://github.com/fastapi/fastapi/pull/14413) by [@YuriiMotov](https://github.com/YuriiMotov). - 📝 Update tech stack in project generation docs. MR [#14472](https://github.com/fastapi/fastapi/pull/14472) by [@alejsdev](https://github.com/alejsdev). ##### Internal - ✅ Add test for Pydantic v2, dataclasses, UUID, and `__annotations__`. MR [#14477](https://github.com/fastapi/fastapi/pull/14477) by [@tiangolo](https://github.com/tiangolo). ### [`v0.124.0`](https://github.com/fastapi/fastapi/releases/tag/0.124.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.10...0.124.0) ##### Features - 🚸 Improve tracebacks by adding endpoint metadata. MR [#14306](https://github.com/fastapi/fastapi/pull/14306) by [@savannahostrowski](https://github.com/savannahostrowski). ##### Internal - ✏️ Fix typo in `scripts/mkdocs_hooks.py`. MR [#14457](https://github.com/fastapi/fastapi/pull/14457) by [@yujiteshima](https://github.com/yujiteshima). ### [`v0.123.10`](https://github.com/fastapi/fastapi/releases/tag/0.123.10) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.9...0.123.10) ##### Fixes - 🐛 Fix using class (not instance) dependency that has `__call__` method. MR [#14458](https://github.com/fastapi/fastapi/pull/14458) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix `separate_input_output_schemas=False` with `computed_field`. MR [#14453](https://github.com/fastapi/fastapi/pull/14453) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.123.9`](https://github.com/fastapi/fastapi/releases/tag/0.123.9) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.8...0.123.9) ##### Fixes - 🐛 Fix OAuth2 scopes in OpenAPI in extra corner cases, parent dependency with scopes, sub-dependency security scheme without scopes. MR [#14459](https://github.com/fastapi/fastapi/pull/14459) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.8`](https://github.com/fastapi/fastapi/releases/tag/0.123.8) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.7...0.123.8) ##### Fixes - 🐛 Fix OpenAPI security scheme OAuth2 scopes declaration, deduplicate security schemes with different scopes. MR [#14455](https://github.com/fastapi/fastapi/pull/14455) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.7`](https://github.com/fastapi/fastapi/releases/tag/0.123.7) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.6...0.123.7) ##### Fixes - 🐛 Fix evaluating stringified annotations in Python 3.10. MR [#11355](https://github.com/fastapi/fastapi/pull/11355) by [@chaen](https://github.com/chaen). ### [`v0.123.6`](https://github.com/fastapi/fastapi/releases/tag/0.123.6) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.5...0.123.6) ##### Fixes - 🐛 Fix support for functools wraps and partial combined, for async and regular functions and classes in path operations and dependencies. MR [#14448](https://github.com/fastapi/fastapi/pull/14448) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.5`](https://github.com/fastapi/fastapi/releases/tag/0.123.5) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.4...0.123.5) ##### Features - ✨ Allow using dependables with `functools.partial()`. MR [#9753](https://github.com/fastapi/fastapi/pull/9753) by [@lieryan](https://github.com/lieryan). - ✨ Add support for wrapped functions (e.g. `@functools.wraps()`) used with forward references. MR [#5077](https://github.com/fastapi/fastapi/pull/5077) by [@lucaswiman](https://github.com/lucaswiman). - ✨ Handle wrapped dependencies. MR [#9555](https://github.com/fastapi/fastapi/pull/9555) by [@phy1729](https://github.com/phy1729). ##### Fixes - 🐛 Fix optional sequence handling with new union syntax from Python 3.10. MR [#14430](https://github.com/fastapi/fastapi/pull/14430) by [@Viicos](https://github.com/Viicos). ##### Refactors - 🔥 Remove dangling extra condiitonal no longer needed. MR [#14435](https://github.com/fastapi/fastapi/pull/14435) by [@tiangolo](https://github.com/tiangolo). - ♻️ Refactor internals, update `is_coroutine` check to reuse internal supported variants (unwrap, check class). MR [#14434](https://github.com/fastapi/fastapi/pull/14434) by [@tiangolo](https://github.com/tiangolo). ##### Translations - 🌐 Sync German docs. MR [#14367](https://github.com/fastapi/fastapi/pull/14367) by [@nilslindemann](https://github.com/nilslindemann). ### [`v0.123.4`](https://github.com/fastapi/fastapi/releases/tag/0.123.4) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.3...0.123.4) ##### Fixes - 🐛 Fix OpenAPI schema support for computed fields when using `separate_input_output_schemas=False`. MR [#13207](https://github.com/fastapi/fastapi/pull/13207) by [@vgrafe](https://github.com/vgrafe). ##### Docs - 📝 Fix docstring of `servers` parameter. MR [#14405](https://github.com/fastapi/fastapi/pull/14405) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.123.3`](https://github.com/fastapi/fastapi/releases/tag/0.123.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.2...0.123.3) ##### Fixes - 🐛 Fix Query\Header\Cookie parameter model alias. MR [#14360](https://github.com/fastapi/fastapi/pull/14360) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix optional sequence handling in `serialize sequence value` with Pydantic V2. MR [#14297](https://github.com/fastapi/fastapi/pull/14297) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.123.2`](https://github.com/fastapi/fastapi/releases/tag/0.123.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.1...0.123.2) ##### Fixes - 🐛 Fix unformatted `{type_}` in FastAPIError. MR [#14416](https://github.com/fastapi/fastapi/pull/14416) by [@Just-Helpful](https://github.com/Just-Helpful). - 🐛 Fix parsing extra non-body parameter list. MR [#14356](https://github.com/fastapi/fastapi/pull/14356) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix parsing extra `Form` parameter list. MR [#14303](https://github.com/fastapi/fastapi/pull/14303) by [@YuriiMotov](https://github.com/YuriiMotov). - 🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms. MR [#13537](https://github.com/fastapi/fastapi/pull/13537) by [@MarinPostma](https://github.com/MarinPostma). ##### Docs - 📝 Add tip on how to install `pip` in case of `No module named pip` error in `virtual-environments.md`. MR [#14211](https://github.com/fastapi/fastapi/pull/14211) by [@zadevhub](https://github.com/zadevhub). - 📝 Update Primary Key notes for the SQL databases tutorial to avoid confusion. MR [#14120](https://github.com/fastapi/fastapi/pull/14120) by [@FlaviusRaducu](https://github.com/FlaviusRaducu). - 📝 Clarify estimation note in documentation. MR [#14070](https://github.com/fastapi/fastapi/pull/14070) by [@SaisakthiM](https://github.com/SaisakthiM). ### [`v0.123.1`](https://github.com/fastapi/fastapi/releases/tag/0.123.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.123.0...0.123.1) ##### Fixes - 🐛 Avoid accessing non-existing "$ref" key for Pydantic v2 compat remapping. MR [#14361](https://github.com/fastapi/fastapi/pull/14361) by [@svlandeg](https://github.com/svlandeg). - 🐛 Fix `TypeError` when encoding a decimal with a `NaN` or `Infinity` value. MR [#12935](https://github.com/fastapi/fastapi/pull/12935) by [@kentwelcome](https://github.com/kentwelcome). ##### Internal - 🐛 Fix Windows UnicodeEncodeError in CLI test. MR [#14295](https://github.com/fastapi/fastapi/pull/14295) by [@hemanth-thirthahalli](https://github.com/hemanth-thirthahalli). - 🔧 Update sponsors: add Greptile. MR [#14429](https://github.com/fastapi/fastapi/pull/14429) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI GitHub topic repositories. MR [#14426](https://github.com/fastapi/fastapi/pull/14426) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump markdown-include-variants from 0.0.6 to 0.0.7. MR [#14423](https://github.com/fastapi/fastapi/pull/14423) by [@YuriiMotov](https://github.com/YuriiMotov). - 👥 Update FastAPI People - Sponsors. MR [#14422](https://github.com/fastapi/fastapi/pull/14422) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Contributors and Translators. MR [#14420](https://github.com/fastapi/fastapi/pull/14420) by [@tiangolo](https://github.com/tiangolo). ### [`v0.123.0`](https://github.com/fastapi/fastapi/releases/tag/0.123.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.122.1...0.123.0) ##### Fixes - 🐛 Cache dependencies that don't use scopes and don't have sub-dependencies with scopes. MR [#14419](https://github.com/fastapi/fastapi/pull/14419) by [@tiangolo](https://github.com/tiangolo). ### [`v0.122.1`](https://github.com/fastapi/fastapi/releases/tag/0.122.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.122.0...0.122.1) ##### Fixes - 🐛 Fix hierarchical security scope propagation. MR [#5624](https://github.com/fastapi/fastapi/pull/5624) by [@kristjanvalur](https://github.com/kristjanvalur). ##### Docs - 💅 Update CSS to explicitly use emoji font. MR [#14415](https://github.com/fastapi/fastapi/pull/14415) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆ Bump markdown-include-variants from 0.0.5 to 0.0.6. MR [#14418](https://github.com/fastapi/fastapi/pull/14418) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.122.0`](https://github.com/fastapi/fastapi/releases/tag/0.122.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.3...0.122.0) ##### Fixes - 🐛 Use `401` status code in security classes when credentials are missing. MR [#13786](https://github.com/fastapi/fastapi/pull/13786) by [@YuriiMotov](https://github.com/YuriiMotov). - If your code depended on these classes raising the old (less correct) `403` status code, check the new docs about how to override the classes, to use the same old behavior: [Use Old 403 Authentication Error Status Codes](https://fastapi.tiangolo.com/how-to/authentication-error-status-code/). ##### Internal - 🔧 Configure labeler to exclude files that start from underscore for `lang-all` label. MR [#14213](https://github.com/fastapi/fastapi/pull/14213) by [@YuriiMotov](https://github.com/YuriiMotov). - 👷 Add pre-commit config with local script for permalinks. MR [#14398](https://github.com/fastapi/fastapi/pull/14398) by [@tiangolo](https://github.com/tiangolo). - 💄 Use font Fira Code to fix display of Rich panels in docs in Windows. MR [#14387](https://github.com/fastapi/fastapi/pull/14387) by [@tiangolo](https://github.com/tiangolo). - 👷 Add custom pre-commit CI. MR [#14397](https://github.com/fastapi/fastapi/pull/14397) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump actions/checkout from 5 to 6. MR [#14381](https://github.com/fastapi/fastapi/pull/14381) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - 👷 Upgrade `latest-changes` GitHub Action and pin `actions/checkout@v5`. MR [#14403](https://github.com/fastapi/fastapi/pull/14403) by [@svlandeg](https://github.com/svlandeg). - 🛠️ Add `add-permalinks` and `add-permalinks-page` to `scripts/docs.py`. MR [#14033](https://github.com/fastapi/fastapi/pull/14033) by [@YuriiMotov](https://github.com/YuriiMotov). - 🔧 Upgrade Material for MkDocs and remove insiders. MR [#14375](https://github.com/fastapi/fastapi/pull/14375) by [@tiangolo](https://github.com/tiangolo). ### [`v0.121.3`](https://github.com/fastapi/fastapi/releases/tag/0.121.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.2...0.121.3) ##### 0.121.3 ##### Refactors - ♻️ Make the result of `Depends()` and `Security()` hashable, as a workaround for other tools interacting with these internal parts. MR [#14372](https://github.com/fastapi/fastapi/pull/14372) by [@tiangolo](https://github.com/tiangolo). ##### Upgrades - ⬆️ Bump Starlette to <`0.51.0`. MR [#14282](https://github.com/fastapi/fastapi/pull/14282) by [@musicinmybrain](https://github.com/musicinmybrain). ##### Docs - 📝 Add missing hash part. MR [#14369](https://github.com/fastapi/fastapi/pull/14369) by [@nilslindemann](https://github.com/nilslindemann). - 📝 Fix typos in code comments. MR [#14364](https://github.com/fastapi/fastapi/pull/14364) by [@Edge-Seven](https://github.com/Edge-Seven). - 📝 Add docs for using FastAPI Cloud. MR [#14359](https://github.com/fastapi/fastapi/pull/14359) by [@tiangolo](https://github.com/tiangolo). ### [`v0.121.2`](https://github.com/fastapi/fastapi/releases/tag/0.121.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.1...0.121.2) ##### Fixes - 🐛 Fix handling of JSON Schema attributes named "$ref". MR [#14349](https://github.com/fastapi/fastapi/pull/14349) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Add EuroPython talk & podcast episode with Sebastián Ramírez. MR [#14260](https://github.com/fastapi/fastapi/pull/14260) by [@clytaemnestra](https://github.com/clytaemnestra). - ✏️ Fix links and add missing permalink in docs. MR [#14217](https://github.com/fastapi/fastapi/pull/14217) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Translations - 🌐 Update Portuguese translations with LLM prompt. MR [#14228](https://github.com/fastapi/fastapi/pull/14228) by [@ceb10n](https://github.com/ceb10n). - 🔨 Add Portuguese translations LLM prompt. MR [#14208](https://github.com/fastapi/fastapi/pull/14208) by [@ceb10n](https://github.com/ceb10n). - 🌐 Sync Russian docs. MR [#14331](https://github.com/fastapi/fastapi/pull/14331) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Sync German docs. MR [#14317](https://github.com/fastapi/fastapi/pull/14317) by [@nilslindemann](https://github.com/nilslindemann). ### [`v0.121.1`](https://github.com/fastapi/fastapi/releases/tag/0.121.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.121.0...0.121.1) ##### Fixes - 🐛 Fix `Depends(func, scope='function')` for top level (parameterless) dependencies. MR [#14301](https://github.com/fastapi/fastapi/pull/14301) by [@luzzodev](https://github.com/luzzodev). ##### Docs - 📝 Upate docs for advanced dependencies with `yield`, noting the changes in 0.121.0, adding `scope`. MR [#14287](https://github.com/fastapi/fastapi/pull/14287) by [@tiangolo](https://github.com/tiangolo). ##### Internal - ⬆ Bump ruff from 0.13.2 to 0.14.3. MR [#14276](https://github.com/fastapi/fastapi/pull/14276) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14289](https://github.com/fastapi/fastapi/pull/14289) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). ### [`v0.121.0`](https://github.com/fastapi/fastapi/releases/tag/0.121.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.4...0.121.0) ##### Features - ✨ Add support for dependencies with scopes, support `scope="request"` for dependencies with `yield` that exit before the response is sent. MR [#14262](https://github.com/fastapi/fastapi/pull/14262) by [@tiangolo](https://github.com/tiangolo). - New docs: [Dependencies with `yield` - Early exit and `scope`](https://fastapi.tiangolo.com/tutorial/dependencies/dependencies-with-yield/#early-exit-and-scope). ##### Internal - 👥 Update FastAPI People - Contributors and Translators. MR [#14273](https://github.com/fastapi/fastapi/pull/14273) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Sponsors. MR [#14274](https://github.com/fastapi/fastapi/pull/14274) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI GitHub topic repositories. MR [#14280](https://github.com/fastapi/fastapi/pull/14280) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump mkdocs-macros-plugin from 1.4.0 to 1.4.1. MR [#14277](https://github.com/fastapi/fastapi/pull/14277) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump mkdocstrings\[python] from 0.26.1 to 0.30.1. MR [#14279](https://github.com/fastapi/fastapi/pull/14279) by [@dependabot\[bot\]](https://github.com/apps/dependabot). ### [`v0.120.4`](https://github.com/fastapi/fastapi/releases/tag/0.120.4) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.3...0.120.4) ##### Fixes - 🐛 Fix security schemes in OpenAPI when added at the top level app. MR [#14266](https://github.com/fastapi/fastapi/pull/14266) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.120.3`](https://github.com/fastapi/fastapi/releases/tag/0.120.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.2...0.120.3) ##### Refactors - ♻️ Reduce internal cyclic recursion in dependencies, from 2 functions calling each other to 1 calling itself. MR [#14256](https://github.com/fastapi/fastapi/pull/14256) by [@tiangolo](https://github.com/tiangolo). - ♻️ Refactor internals of dependencies, simplify code and remove `get_param_sub_dependant`. MR [#14255](https://github.com/fastapi/fastapi/pull/14255) by [@tiangolo](https://github.com/tiangolo). - ♻️ Refactor internals of dependencies, simplify using dataclasses. MR [#14254](https://github.com/fastapi/fastapi/pull/14254) by [@tiangolo](https://github.com/tiangolo). ##### Docs - 📝 Update note for untranslated pages. MR [#14257](https://github.com/fastapi/fastapi/pull/14257) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.120.2`](https://github.com/fastapi/fastapi/releases/tag/0.120.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.1...0.120.2) ##### Fixes - 🐛 Fix separation of schemas with nested models introduced in 0.119.0. MR [#14246](https://github.com/fastapi/fastapi/pull/14246) by [@tiangolo](https://github.com/tiangolo). ##### Internal - 🔧 Add sponsor: SerpApi. MR [#14248](https://github.com/fastapi/fastapi/pull/14248) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump actions/download-artifact from 5 to 6. MR [#14236](https://github.com/fastapi/fastapi/pull/14236) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14237](https://github.com/fastapi/fastapi/pull/14237) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - ⬆ Bump actions/upload-artifact from 4 to 5. MR [#14235](https://github.com/fastapi/fastapi/pull/14235) by [@dependabot\[bot\]](https://github.com/apps/dependabot). ### [`v0.120.1`](https://github.com/fastapi/fastapi/releases/tag/0.120.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.120.0...0.120.1) ##### Upgrades - ⬆️ Bump Starlette to <`0.50.0`. MR [#14234](https://github.com/fastapi/fastapi/pull/14234) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Internal - 🔧 Add `license` and `license-files` to `pyproject.toml`, remove `License` from `classifiers`. MR [#14230](https://github.com/fastapi/fastapi/pull/14230) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.120.0`](https://github.com/fastapi/fastapi/releases/tag/0.120.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.119.1...0.120.0) There are no major nor breaking changes in this release. ☕️ The internal reference documentation now uses `annotated_doc.Doc` instead of `typing_extensions.Doc`, this adds a new (very small) dependency on [`annotated-doc`](https://github.com/fastapi/annotated-doc), a package made just to provide that `Doc` documentation utility class. I would expect `typing_extensions.Doc` to be deprecated and then removed at some point from `typing_extensions`, for that reason there's the new `annotated-doc` micro-package. If you are curious about this, you can read more in the repo for [`annotated-doc`](https://github.com/fastapi/annotated-doc). This new version `0.120.0` only contains that transition to the new home package for that utility class `Doc`. ##### Translations - 🌐 Sync German docs. MR [#14188](https://github.com/fastapi/fastapi/pull/14188) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - ➕ Migrate internal reference documentation from `typing_extensions.Doc` to `annotated_doc.Doc`. MR [#14222](https://github.com/fastapi/fastapi/pull/14222) by [@tiangolo](https://github.com/tiangolo). - 🛠️ Update German LLM prompt and test file. MR [#14189](https://github.com/fastapi/fastapi/pull/14189) by [@nilslindemann](https://github.com/nilslindemann). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14181](https://github.com/fastapi/fastapi/pull/14181) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). ### [`v0.119.1`](https://github.com/fastapi/fastapi/releases/tag/0.119.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.119.0...0.119.1) ##### Fixes - 🐛 Fix internal Pydantic v1 compatibility (warnings) for Python 3.14 and Pydantic 2.12.1. MR [#14186](https://github.com/fastapi/fastapi/pull/14186) by [@svlandeg](https://github.com/svlandeg). ##### Docs - 📝 Replace `starlette.io` by `starlette.dev` and `uvicorn.org` by `uvicorn.dev`. MR [#14176](https://github.com/fastapi/fastapi/pull/14176) by [@Kludex](https://github.com/Kludex). ##### Internal - 🔧 Add sponsor Requestly. MR [#14205](https://github.com/fastapi/fastapi/pull/14205) by [@tiangolo](https://github.com/tiangolo). - 🔧 Configure reminder for `waiting` label in `issue-manager`. MR [#14156](https://github.com/fastapi/fastapi/pull/14156) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.119.0`](https://github.com/fastapi/fastapi/releases/tag/0.119.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.3...0.119.0) FastAPI now (temporarily) supports both Pydantic v2 models and `pydantic.v1` models at the same time in the same app, to make it easier for any FastAPI apps still using Pydantic v1 to gradually but quickly **migrate to Pydantic v2**. ```Python from fastapi import FastAPI from pydantic import BaseModel as BaseModelV2 from pydantic.v1 import BaseModel class Item(BaseModel): name: str description: str | None = None class ItemV2(BaseModelV2): title: str summary: str | None = None app = FastAPI() @app.post("/items/", response_model=ItemV2) def create_item(item: Item): return {"title": item.name, "summary": item.description} ``` Adding this feature was a big effort with the main objective of making it easier for the few applications still stuck in Pydantic v1 to migrate to Pydantic v2. And with this, support for **Pydantic v1 is now deprecated** and will be **removed** from FastAPI in a future version soon. **Note**: have in mind that the Pydantic team already stopped supporting Pydantic v1 for recent versions of Python, starting with Python 3.14. You can read in the docs more about how to [Migrate from Pydantic v1 to Pydantic v2](https://fastapi.tiangolo.com/how-to/migrate-from-pydantic-v1-to-pydantic-v2/). ##### Features - ✨ Add support for `from pydantic.v1 import BaseModel`, mixed Pydantic v1 and v2 models in the same app. MR [#14168](https://github.com/fastapi/fastapi/pull/14168) by [@tiangolo](https://github.com/tiangolo). ### [`v0.118.3`](https://github.com/fastapi/fastapi/releases/tag/0.118.3) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.2...0.118.3) ##### Upgrades - ⬆️ Add support for Python 3.14. MR [#14165](https://github.com/fastapi/fastapi/pull/14165) by [@svlandeg](https://github.com/svlandeg). ### [`v0.118.2`](https://github.com/fastapi/fastapi/releases/tag/0.118.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.1...0.118.2) ##### Fixes - 🐛 Fix tagged discriminated union not recognized as body field. MR [#12942](https://github.com/fastapi/fastapi/pull/12942) by [@frankie567](https://github.com/frankie567). ##### Internal - ⬆ Bump astral-sh/setup-uv from 6 to 7. MR [#14167](https://github.com/fastapi/fastapi/pull/14167) by [@dependabot\[bot\]](https://github.com/apps/dependabot). ### [`v0.118.1`](https://github.com/fastapi/fastapi/releases/tag/0.118.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.118.0...0.118.1) ##### Upgrades - 👽️ Ensure compatibility with Pydantic 2.12.0. MR [#14036](https://github.com/fastapi/fastapi/pull/14036) by [@cjwatson](https://github.com/cjwatson). ##### Docs - 📝 Add External Link: Getting started with logging in FastAPI. MR [#14152](https://github.com/fastapi/fastapi/pull/14152) by [@itssimon](https://github.com/itssimon). ##### Translations - 🔨 Add Russian translations LLM prompt. MR [#13936](https://github.com/fastapi/fastapi/pull/13936) by [@tiangolo](https://github.com/tiangolo). - 🌐 Sync German docs. MR [#14149](https://github.com/fastapi/fastapi/pull/14149) by [@nilslindemann](https://github.com/nilslindemann). - 🌐 Add Russian translations for missing pages (LLM-generated). MR [#14135](https://github.com/fastapi/fastapi/pull/14135) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Update Russian translations for existing pages (LLM-generated). MR [#14123](https://github.com/fastapi/fastapi/pull/14123) by [@YuriiMotov](https://github.com/YuriiMotov). - 🌐 Remove configuration files for inactive translations. MR [#14130](https://github.com/fastapi/fastapi/pull/14130) by [@tiangolo](https://github.com/tiangolo). ##### Internal - 🔨 Move local coverage logic to its own script. MR [#14166](https://github.com/fastapi/fastapi/pull/14166) by [@tiangolo](https://github.com/tiangolo). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14161](https://github.com/fastapi/fastapi/pull/14161) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - ⬆ Bump griffe-typingdoc from 0.2.8 to 0.2.9. MR [#14144](https://github.com/fastapi/fastapi/pull/14144) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump mkdocs-macros-plugin from 1.3.9 to 1.4.0. MR [#14145](https://github.com/fastapi/fastapi/pull/14145) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump markdown-include-variants from 0.0.4 to 0.0.5. MR [#14146](https://github.com/fastapi/fastapi/pull/14146) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14126](https://github.com/fastapi/fastapi/pull/14126) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - 👥 Update FastAPI GitHub topic repositories. MR [#14150](https://github.com/fastapi/fastapi/pull/14150) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Sponsors. MR [#14139](https://github.com/fastapi/fastapi/pull/14139) by [@tiangolo](https://github.com/tiangolo). - 👥 Update FastAPI People - Contributors and Translators. MR [#14138](https://github.com/fastapi/fastapi/pull/14138) by [@tiangolo](https://github.com/tiangolo). - ⬆ Bump ruff from 0.12.7 to 0.13.2. MR [#14147](https://github.com/fastapi/fastapi/pull/14147) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump sqlmodel from 0.0.24 to 0.0.25. MR [#14143](https://github.com/fastapi/fastapi/pull/14143) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - ⬆ Bump tiangolo/issue-manager from 0.5.1 to 0.6.0. MR [#14148](https://github.com/fastapi/fastapi/pull/14148) by [@dependabot\[bot\]](https://github.com/apps/dependabot). - 👷 Update docs previews comment, single comment, add failure status. MR [#14129](https://github.com/fastapi/fastapi/pull/14129) by [@tiangolo](https://github.com/tiangolo). - 🔨 Modify `mkdocs_hooks.py` to add `title` to page's metadata (remove permalinks in social cards). MR [#14125](https://github.com/fastapi/fastapi/pull/14125) by [@YuriiMotov](https://github.com/YuriiMotov). ### [`v0.118.0`](https://github.com/fastapi/fastapi/releases/tag/0.118.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.117.1...0.118.0) ##### 0.118.0 ##### Fixes - 🐛 Fix support for `StreamingResponse`s with dependencies with `yield` or `UploadFile`s, close after the response is done. MR [#14099](https://github.com/fastapi/fastapi/pull/14099) by [@tiangolo](https://github.com/tiangolo). Before FastAPI 0.118.0, if you used a dependency with `yield`, it would run the exit code after the *path operation function* returned but right before sending the response. This change also meant that if you returned a `StreamingResponse`, the exit code of the dependency with `yield` would have been already run. For example, if you had a database session in a dependency with `yield`, the `StreamingResponse` would not be able to use that session while streaming data because the session would have already been closed in the exit code after `yield`. This behavior was reverted in 0.118.0, to make the exit code after `yield` be executed after the response is sent. You can read more about it in the docs for [Advanced Dependencies - Dependencies with `yield`, `HTTPException`, `except` and Background Tasks](https://fastapi.tiangolo.com/advanced/advanced-dependencies#dependencies-with-yield-httpexception-except-and-background-tasks). Including what you could do if you wanted to close a database session earlier, before returning the response to the client. ##### Docs - 📝 Update `tutorial/security/oauth2-jwt/` to use `pwdlib` with Argon2 instead of `passlib`. MR [#13917](https://github.com/fastapi/fastapi/pull/13917) by [@Neizvestnyj](https://github.com/Neizvestnyj). - ✏️ Fix typos in OAuth2 password request forms. MR [#14112](https://github.com/fastapi/fastapi/pull/14112) by [@alv2017](https://github.com/alv2017). - 📝 Update contributing guidelines for installing requirements. MR [#14095](https://github.com/fastapi/fastapi/pull/14095) by [@alejsdev](https://github.com/alejsdev). ##### Translations - 🌐 Sync German docs. MR [#14098](https://github.com/fastapi/fastapi/pull/14098) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - ⬆ \[pre-commit.ci] pre-commit autoupdate. MR [#14103](https://github.com/fastapi/fastapi/pull/14103) by [@pre-commit-ci\[bot\]](https://github.com/apps/pre-commit-ci). - ♻️ Refactor sponsor image handling. MR [#14102](https://github.com/fastapi/fastapi/pull/14102) by [@alejsdev](https://github.com/alejsdev). - 🐛 Fix sponsor display issue by hiding element on image error. MR [#14097](https://github.com/fastapi/fastapi/pull/14097) by [@alejsdev](https://github.com/alejsdev). - 🐛 Hide sponsor badge when sponsor image is not displayed. MR [#14096](https://github.com/fastapi/fastapi/pull/14096) by [@alejsdev](https://github.com/alejsdev). ### [`v0.117.1`](https://github.com/fastapi/fastapi/releases/tag/0.117.1) [Compare Source](https://github.com/fastapi/fastapi/compare/0.117.0...0.117.1) ##### Fixes - 🐛 Fix validation error when `File` is declared after `Form` parameter. MR [#11194](https://github.com/fastapi/fastapi/pull/11194) by [@thomasleveil](https://github.com/thomasleveil). ### [`v0.117.0`](https://github.com/fastapi/fastapi/releases/tag/0.117.0) [Compare Source](https://github.com/fastapi/fastapi/compare/0.116.2...0.117.0) ##### Features - ✨ Allow `None` as return type for bodiless responses. MR [#9425](https://github.com/fastapi/fastapi/pull/9425) by [@hofrob](https://github.com/hofrob). - ✨ Allow array values for OpenAPI schema `type` field. MR [#13639](https://github.com/fastapi/fastapi/pull/13639) by [@sammasak](https://github.com/sammasak). - ✨ Add OpenAPI `external_docs` parameter to `FastAPI`. MR [#13713](https://github.com/fastapi/fastapi/pull/13713) by [@cmtoro](https://github.com/cmtoro). ##### Fixes - ⚡️ Fix `default_factory` for response model field with Pydantic V1. MR [#9704](https://github.com/fastapi/fastapi/pull/9704) by [@vvanglro](https://github.com/vvanglro). - 🐛 Fix inconsistent processing of model docstring formfeed char with Pydantic V1. MR [#6039](https://github.com/fastapi/fastapi/pull/6039) by [@MaxwellPayne](https://github.com/MaxwellPayne). - 🐛 Fix `jsonable_encoder` alters `json_encoders` of Pydantic v1 objects. MR [#4972](https://github.com/fastapi/fastapi/pull/4972) by [@aboubacs](https://github.com/aboubacs). - 🐛 Reenable `allow_arbitrary_types` when only 1 argument is used on the API endpoint. MR [#13694](https://github.com/fastapi/fastapi/pull/13694) by [@rmawatson](https://github.com/rmawatson). - 🐛 Fix `inspect.getcoroutinefunction()` can break testing with `unittest.mock.patch()`. MR [#14022](https://github.com/fastapi/fastapi/pull/14022) by [@secrett2633](https://github.com/secrett2633). ##### Refactors - ♻️ Create `dependency-cache` dict in `solve_dependencies` only if `None` (don't re-create if empty). MR [#13689](https://github.com/fastapi/fastapi/pull/13689) by [@bokshitsky](https://github.com/bokshitsky). - ✅ Enable test case for duplicated headers in `test_tutorial/test_header_params/test_tutorial003.py`. MR [#13864](https://github.com/fastapi/fastapi/pull/13864) by [@Amogha-ark](https://github.com/Amogha-ark). - 📌 Pin `httpx` to `>=0.23.0,<1.0.0`. MR [#14086](https://github.com/fastapi/fastapi/pull/14086) by [@YuriiMotov](https://github.com/YuriiMotov). ##### Docs - 📝 Add note about Cookies and JavaScript on `tutorial/cookie-params.md`. MR [#13510](https://github.com/fastapi/fastapi/pull/13510) by [@Kludex](https://github.com/Kludex). - 📝 Remove outdated formatting from `path-params-numeric-validations.md` for languages `en`, `es` and `uk`.. MR [#14059](https://github.com/fastapi/fastapi/pull/14059) by [@svlandeg](https://github.com/svlandeg). - 📝 Fix and Improve English Documentation. MR [#14048](https://github.com/fastapi/fastapi/pull/14048) by [@nilslindemann](https://github.com/nilslindemann). ##### Translations - 📝 Update prompts and German translation. MR [#14015](https://github.com/fastapi/fastapi/pull/14015) by [@nilslindemann](https://github.com/nilslindemann). ##### Internal - ✅ Simplify tests for response\_model. MR [#14062](https://github.com/fastapi/fastapi/pull/14062) by [@dynamicy](https://github.com/dynamicy). - 🚨 Install pydantic.mypy plugin. MR [#14081](https://github.com/fastapi/fastapi/pull/14081) by [@svlandeg](https://github.com/svlandeg). - ✅ Add LLM test file. MR [#14049](https://github.com/fastapi/fastapi/pull/14049) by [@nilslindemann](https://github.com/nilslindemann). - 🔨 Update translations script. MR [#13968](https://github.com/fastapi/fastapi/pull/13968) by [@YuriiMotov](https://github.com/YuriiMotov). - 🛠️ Update `docs.py generate-readme` command to remove permalinks from headers. MR [#14055](https://github.com/fastapi/fastapi/pull/14055) by [@YuriiMotov](https://github.com/YuriiMotov). - ⬆️ Update mypy to 1.14.1. MR [#12970](https://github.com/fastapi/fastapi/pull/12970) by [@tamird](https://github.com/tamird). ### [`v0.116.2`](https://github.com/fastapi/fastapi/releases/tag/0.116.2) [Compare Source](https://github.com/fastapi/fastapi/compare/0.116.1...0.116.2) ##### Upgrades - ⬆️ Upgrade Starlette supported version range to >=0.40.0,<0.49.0. MR [#14077](https://github.com/fastapi/fastapi/pull/14077) by [@musicinmybrain](https://github.com/musicinmybrain). ##### Docs - 📝 Add documentation for Behind a Proxy - Proxy Forwarded Headers, using `--forwarded-allow-ips="*"`. MR [#14028](https://github.com/fastapi/fastapi/pull/14028) by [@tiangolo](https://github.com/tiangolo). - 📝 Add deprecation info block about `dict()` in `docs/tutorial/body.md`. MR [#13906](https://github.com/fastapi/fastapi/pull/13906) by [@jomkv](https://github.com/jomkv). - 📝 Fix Twitter to be X (Twitter) ev…

MarinPostma added 2 commits March 25, 2025 14:50

fix none default

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add tests

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MarinPostma changed the title ~~Fix handling of None default values in Form validation~~ 🐛 Fix handling of None default values in Form validation Mar 25, 2025

MarinPostma and others added 2 commits March 25, 2025 16:17

fix import

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🎨 [pre-commit.ci] Auto format from pre-commit.com hooks

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svlandeg added the bug Something isn't working label Mar 26, 2025

svlandeg changed the title ~~🐛 Fix handling of None default values in Form validation~~ 🐛 Fix handling of None default values in Form validation Mar 26, 2025

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svlandeg mentioned this pull request Oct 22, 2025

fix ISSUE 13533 (Multiple regressions in the handling of forms & form validation) #14212

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JordanChow51 approved these changes Oct 29, 2025

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Merge branch 'master' into adhoc/fix-handling-of-none-defaults-in-forms

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YuriiMotov added 2 commits November 2, 2025 16:03

Refactor _extract_form_body

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Remove post_multi_part_file_first test

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YuriiMotov changed the title ~~🐛 Fix handling of None default values in Form validation~~ 🐛 Fix inability to pass None (empty string) when form field has default value None Nov 2, 2025

This was referenced Nov 2, 2025

🐛 Don't pre-fill form parameters with default values in _get_multidict_value #14283

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[Fix] [Issue 13533]: Multiple regressions in the handling of forms & … #14244

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tiangolo added 3 commits December 2, 2025 05:26

✅ Tweak tests to keep the same conventions as the rest of the tests

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Merge branch 'master' into adhoc/fix-handling-of-none-defaults-in-forms

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✅ Tweak instance ordering for consistency

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tiangolo changed the title ~~🐛 Fix inability to pass None (empty string) when form field has default value None~~ 🐛 Fix support for form values with empty strings interpreted as missing (None if that's the default), for compatibility with HTML forms Dec 2, 2025

tiangolo merged commit d68c066 into fastapi:master Dec 2, 2025
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tiangolo mentioned this pull request Dec 2, 2025

Multiple regressions in the handling of forms & form validation #13533

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YuriiMotov mentioned this pull request Dec 3, 2025

Regression between 0.113.0 and 0.114.0: OAuth2PasswordRequestForm used to accept grant_type="" #12240

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Update dependency fastapi to >=0.125.0,<0.126.0 mgh3326/auto_trader#90

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🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms #13537

🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms #13537

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🐛 Fix support for form values with empty strings interpreted as missing (None if that's the default), for compatibility with HTML forms #13537

🐛 Fix support for form values with empty strings interpreted as missing (None if that's the default), for compatibility with HTML forms #13537

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🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms #13537

🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms #13537

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