I am trying Ruff for the first time, and I'm not being able to sort imports alphabetically, using the default settings. According to the documentation, Ruff should be very similar to isort.
Here is a short example with unsorted imports:
import os
import collections
Run ruff command
ruff format file.py
Output:
1 file left unchanged
But if I run isort the imports are properly sorted
isort file.py
Output:
Fixing .../file.py
What am I doing wrong?
You can sort the imports and format the code by running the following commands (source):
ruff check --select I --fix
ruff format
Note that sorting is done at the linting stage, which can be a little surprising. There are discussions to address it. Thus, if you only need to sort the imports, you can skip ruff format command.
Note that the above command is equivalent to running isort with profile = "black". Depending on your expectations, you might need to fiddle with ruff configuration options. You can find more information in the documentation:
According to ruff format doesn't sort imports, leaves file unchanged #8926:
In Ruff, import sorting and re-categorization is part of the linter, not the formatter. The formatter will re-format imports, but it won't rearrange or regroup them, because the formatter maintains the invariant that it doesn't modify the program's AST (i.e., its semantics and behavior).
To get isort-like behavior, you'd want to run
ruff check --fixwith--select Ior addingextend-select = ["I"]to yourpyproject.tomlorruff.toml.
tool.ruff.lint section of pyproject.toml file, and while running ruff check --fix config.py produces the required error report config.py:37:1: E402 Module level import not at top of file Found 1 error. it does not automatically resort the imports. How do I make it resort the imports properly just like iSort does?
