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Flake8 lint for trailing commas.

Project description

This is an obsolete fork of PyCQA/flake8-commas which added support for Python 3.12, match statement, and other features. Support for Python version below 3.8 was dropped, as well as older (5.x) versions of flake8.

This fork is deprecated – use flake8-commas instead.

Build Status PyPI - Version No Maintenance Intended

Migration back to flake8-commas

All users should migrate back to flake8-commas.

As both packages unfortunately install the same module, removal of this package is required before installing that one:

pip uninstall flake8-commas-x
pip install flake8-commas

Usage

If you are using flake8 it’s as easy as:

pip install flake8-commas-x

Now you can avoid those annoying merge conflicts on dictionary and list diffs.

Errors

Different versions of python require commas in different places. Ignore the errors for languages you don’t use in your flake8 config:

Code

message

C812

missing trailing comma

C813

missing trailing comma in Python 3

C814

missing trailing comma in Python 2

C815

missing trailing comma in Python 3.5+

C816

missing trailing comma in Python 3.6+

C818

trailing comma on bare tuple prohibited

C819

trailing comma prohibited

Examples

lookup_table = {
    'key1': 'value',
    'key2': 'something'  # <-- missing a trailing comma
}

json_data = json.dumps({
    "key": "value",
}),                      # <-- incorrect trailing comma. json_data is now a tuple. Likely by accident.

3.0.0 (2024-03-12)

  • Project renamed to flake8-commas-x to continue maintenance.

  • Support dropped for Python <3.8.

  • Support added for Python 3.12.

  • Drop explicit noqa handling; this is handled by flake8 now.

  • Remove use of pkg_resources in favour of importlib.

  • CI moved to GitHub Actions.

2.1.0 (2021-10-13)

2.0.0 (2018-03-19)

1.0.0 (2018-01-04)

  • No changes from 0.5.1, just releasing the first major version.

0.5.1 (2018-01-02)

  • Refactor single/multi tuple/subscript to simply count commas in all cases.

  • Prohibit trailing commas in lambda parameter lists.

  • Fix a missing trailing comma false positive in subcripts with slices.

  • Fix a prohibited trailing comma false positve in subscripts with slices.

  • All (Issue #48)

0.5.0 (2018-01-02)

  • Remove EOL Python 3.3. (Issue #47)

  • Prohibit trailing commas where there is no following new line (or forming a single element tuple). (Issue #46)

0.4.3 (2017-04-25)

  • Enforce trailing commas in subscript tuples and slices again. Regression from 0.4.2 (Issue #42)

0.4.2 (2017-04-18)

  • Prevent lambda params in a parenth form enforcing a trailing comma. (Issue #41)

  • Fix issue preventing execution on Python 2 with Flake8 3. (Issue #35)

  • Allow bare wrapped subscript notation access. (Issue #39)

  • Don’t require comma in assert statement with parenth form. (Issue #37)

0.4.1 (2017-01-18)

  • Add the framework flake8 trove classifier.

0.4.0 (2017-01-18)

  • Support flake8 3.x.x. (Issue #20)

  • No trailing comma after any function def with unpack.

  • support Python 3.6 issue9232 trailing commas. (Issue #33)

0.3.1 (2017-01-18)

  • Also parse unpacks with literals. (Issue #30)

0.3.0 (2017-01-16)

  • If there is a comment after the last item, do not report an error. (Issue #18)

  • If there is an empty, tuple, list, dict, or function, do not report an error. (Issue #17)

  • Support PEP 3132 Python 3.5+ extended unpacking. (Issue #26)

  • *args should not require a trailing comma. (Issue #27)

0.2.0 (2017-01-13)

  • First version of flake8-commas with changelog

  • Fix HTML readme render on PyPI.

  • Support various parenth_form edge cases.

  • Merge from flake8-trailing-commas

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