Switch from pkg_resources to importlib.metadata#2155
Merged
jeanas merged 6 commits intopygments:masterfrom Jun 4, 2022
Merged
Conversation
importlib.metadata is a standard library replacement for pkg_resources, available starting with Python 3.8. It is faster than pkg_resources. This lets the plugin interface use it when available, i.e. on Python 3.8 and later. On earlier Python, it uses the importlib_metadata PyPI backport if available, and finally falls back on pkg_resources. setup.cfg gains an extra called plugins, which can allow a project to install "pygments[plugins]" in order to ensure that plugins support is present even if installed with older Python versions. Timings for lexing an empty file with a lexer from a random plugin: Before: real 0m0,238s user 0m0,210s sys 0m0,029s After: real 0m0,141s user 0m0,125s sys 0m0,017s Fixes pygments#2116, pygments#2126
This was referenced May 29, 2022
It was apparently added in Python 3.10 or recent versions of the importlib_metadata backport.
Contributor
Author
|
Bah. This failed the CI initially because |
jeanas
commented
May 29, 2022
Member
|
Thanks for taking on this topic! I'll try to review when back home. |
…wer importlib_metadata
Contributor
Author
|
Thanks. No hurry, take your time. |
2 tasks
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
importlib.metadata is a standard library replacement for
pkg_resources, available starting with Python 3.8. It is faster than
pkg_resources. This lets the plugin interface use it when available,
i.e. on Python 3.8 and later. On earlier Python, it uses the
importlib_metadata PyPI backport if available, and finally falls back
on pkg_resources. setup.cfg gains an extra called plugins, which can
allow a project to install "pygments[plugins]" in order to ensure that
plugins support is present even if installed with older Python
versions.
Timings for lexing an empty file with a lexer from a random plugin:
Before:
After:
Fixes #2116, #2126