[PyUP] Update flake8 to 4.0.1

[pyup-bot]

This PR updates flake8 from 3.5.0 to 4.0.1.

Changelog

3.9.2

-------------------

You can view the `3.9.2 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix error message for ``E111`` in ``pycodestyle`` (See also :pull:`1328`,
:issue:`1327`).

Deprecations
~~~~~~~~~~~~

- ``indent_size_str`` is deprecated, use ``str(indent_size)`` instead (See
also :pull:`1328`, :issue:`1327`).


.. all links
.. _3.9.2 milestone:
 https://github.com/PyCQA/flake8/milestone/40

3.9.1

-------------------

You can view the `3.9.1 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix codes being ignored by plugins utilizing ``extend_default_ignore`` (See
also :pull:`1317`)


.. all links
.. _3.9.1 milestone:
 https://github.com/PyCQA/flake8/milestone/38

3.9.0

-------------------

You can view the `3.9.0 milestone`_ on GitHub for more details.

New Dependency Information
~~~~~~~~~~~~~~~~~~~~~~~~~~

- Pyflakes has been updated to >= 2.3.0, < 2.4.0 (See also :issue:`1006`)

- pycodestyle has been updated to >= 2.7.0, < 2.8.0 (See also :issue:`1007`)

Deprecations
~~~~~~~~~~~~

- Drop support for python 3.4 (See also :issue:`1283`)

Features
~~~~~~~~

- Add ``--no-show-source`` option to disable ``--show-source`` (See also
:issue:`995`)

Bugs Fixed
~~~~~~~~~~

- Fix handling of ``crlf`` line endings when linting stdin (See also
:issue:`1002`)


.. all links
.. _3.9.0 milestone:
 https://github.com/pycqa/flake8/milestone/37

3.8.4

-------------------

You can view the `3.8.4 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix multiprocessing errors on platforms without ``sem_open`` syscall.  (See
also :issue:`1282`)

- Fix skipping of physical checks on the last line of a file which does not
end in a newline (See also :issue:`997`)

.. all links
.. _3.8.4 milestone:
 https://github.com/pycqa/flake8/milestone/36

3.8.3

-------------------

You can view the `3.8.3 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Also catch ``SyntaxError`` when tokenizing (See also :issue:`992`,
:issue:`747`)

- Fix ``--jobs`` default display in ``flake8 --help`` (See also :issue:`1272`,
:issue:`750`)

.. all links
.. _3.8.3 milestone:
 https://github.com/pycqa/flake8/milestone/35

3.8.2

-------------------

You can view the `3.8.2 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Improve performance by eliminating unnecessary sort (See also :issue:`991`)

- Improve messaging of ``--jobs`` argument by utilizing ``argparse`` (See also
:issue:`1269`, :issue:`1110`)

- Fix file configuration options to be relative to the config passed on the
command line (See also :issue:`442`, :issue:`736`)

- Fix incorrect handling of ``--extend-exclude`` by treating its values as
files (See also :issue:`1271`, :issue:`738`)

.. all links
.. _3.8.2 milestone:
 https://github.com/pycqa/flake8/milestone/34

3.8.1

-------------------

You can view the `3.8.1 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix ``--output-file`` (regression in 3.8.0) (See also :issue:`990`,
:issue:`725`)


.. all links
.. _3.8.1 milestone:
 https://github.com/pycqa/flake8/milestone/33

3.8.0

-------------------

You can view the `3.8.0 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix logical checks which report positions out of bounds (See also
:issue:`987`, :issue:`723`)

- Fix ``--exclude=.*`` accidentally matching ``.`` and ``..`` (See also
:issue:`441`, :issue:`360`)

Deprecations
~~~~~~~~~~~~

- Add deprecation message for vcs hooks (See also :issue:`985`,
:issue:`296`)

3.8.0a2

---------------------

You can view the `3.8.0 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix ``type="str"`` optparse options (See also :issue:`984`)

3.8.0a1

---------------------

You can view the `3.8.0 milestone`_ on GitHub for more details.

New Dependency Information
~~~~~~~~~~~~~~~~~~~~~~~~~~

- Remove dependency on ``entrypoints`` and add dependency on
``importlib-metadata`` (only for ``python<3.8``) (See also :issue:`1297`,
:issue:`297`)

- Pyflakes has been updated to >= 2.2.0, < 2.3.0 (See also :issue:`982`)

- pycodestyle has been updated to >= 2.6.0a1, < 2.7.0 (See also :issue:`983`)

Features
~~~~~~~~

- Add ``--extend-exclude`` option to add to ``--exclude`` without overwriting
(See also :issue:`1211`, :issue:`1091`)

- Move argument parsing from ``optparse`` to ``argparse`` (See also
:issue:`939`

- Group plugin options in ``--help`` (See also :issue:`1219`, :issue:`294`)

- Remove parsing of ``verbose`` from configuration files as it was not
consistently applied (See also :issue:`1245`, :issue:`245`)

- Remove parsing of ``output_file`` from configuration files as it was not
consistently applied (See also :issue:`1246`)

- Resolve configuration files relative to ``cwd`` instead of common prefix of
passed filenames.  You may need to change ``flake8 subproject`` to
``cd subproject && flake8 .`` (See also :issue:`952`)

- Officially support python3.8 (See also :issue:`963`)

- ``--disable-noqa`` now also disables `` flake8: noqa`` (See also
:issue:`1296`, :issue:`318`)

- Ensure that a missing file produces a ``E902`` error (See also :issue:`1262`,
:issue:`328`)

- `` noqa`` comments now apply to all of the lines in an explicit ``\``
continuation or in a line continued by a multi-line string (See also
:issue:`1266`, :issue:`621`)

Bugs Fixed
~~~~~~~~~~

- Fix ``--exclude=./t.py`` to only match ``t.py`` at the top level (See also
:issue:`1208`, :issue:`628`)

- Fix ``--show-source`` when a file is indented with tabs (See also
:issue:`1218`, :issue:`719`)

- Fix crash when ``--max-line-length`` is given a non-integer (See also
:issue:`939`, :issue:`704`)

- Prevent flip-flopping of ``indent_char`` causing extra ``E101`` errors (See
also :issue:`949`, `pycodestyle886`_)

- Only enable multiprocessing when the method is ``fork`` fixing issues
on macos with python3.8+ (See also :issue:`955`, :issue:`315`) (note: this
fix also landed in 3.7.9)

- ``noqa`` is now only handled by flake8 fixing specific-noqa.  Plugins
requesting this parameter will always receive ``False`` (See also
:issue:`1214`, :issue:`1104`)

- Fix duplicate loading of plugins when invoked via ``python -m flake8`` (See
also :issue:`1297`)

- Fix early exit when ``--exit-zero`` and ``--diff`` are provided and the diff
is empty (See also :issue:`970`)

- Consistently split lines when ``\f`` is present when reading from stdin (See
also :issue:`976`, :issue:`202`)

Deprecations
~~~~~~~~~~~~

- ``python setup.py flake8`` (setuptools integration) is now deprecated and
will be removed in a future version (See also :issue:`935`, :issue:`1098`)

- ``type='string'`` (optparse) types are deprecated, use
``type=callable`` (argparse) instead.  Support for ``type='string'`` will
be removed in a future version (See also :issue:`939`)

- ``%default`` in plugin option help text is deprecated, use ``%(default)s``
instead.  Support for ``%default`` will be removed in a future version (See
also :issue:`939`)

- optparse-style ``action='callback'`` setting for options is deprecated, use
argparse action classes instead.  This will be removed in a future version
(See also :issue:`939`)


.. all links
.. _3.8.0 milestone:
 https://github.com/pycqa/flake8/milestone/31

.. issue links
.. _pycodestyle886:
https://github.com/PyCQA/pycodestyle/issues/886

3.7.9

-------------------

You can view the `3.7.9 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Disable multiprocessing when the multiprocessing method is ``spawn`` (such
as on macos in python3.8) (See also :issue:`956`, :issue:`315`)


.. all links
.. _3.7.9 milestone:
 https://github.com/pycqa/flake8/milestone/32

3.7.8

-------------------

You can view the `3.7.8 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix handling of ``Application.parse_preliminary_options_and_args`` when
argv is an empty list (See also :issue:`1303`, :issue:`694`)

- Fix crash when a file parses but fails to tokenize (See also :issue:`1210`,
:issue:`1088`)

- Log the full traceback on plugin exceptions (See also :issue:`926`)

- Fix `` noqa: ...`` comments with multi-letter codes (See also :issue:`931`,
:issue:`1101`)


.. all links
.. _3.7.8 milestone:
 https://github.com/pycqa/flake8/milestone/30

3.7.7

-------------------

You can view the `3.7.7 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix crashes in plugins causing ``flake8`` to hang while unpickling errors
(See also :issue:`1206`, :issue:`681`)


.. all links
.. _3.7.7 milestone:
 https://github.com/pycqa/flake8/milestone/29

3.7.6

-------------------

You can view the `3.7.6 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix ``--per-file-ignores`` for multi-letter error codes (See also
:issue:`1203`, :issue:`683`)

- Improve flake8 speed when only 1 filename is passed (See also :issue:`1204`)


.. all links
.. _3.7.6 milestone:
 https://github.com/pycqa/flake8/milestone/28

3.7.5

-------------------

You can view the `3.7.5 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix reporting of pyflakes "referenced before assignment" error (See also
:issue:`923`, :issue:`679`)


.. all links
.. _3.7.5 milestone:
 https://github.com/pycqa/flake8/milestone/27

3.7.4

-------------------

You can view the `3.7.4 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix performance regression with lots of ``per-file-ignores`` and errors
(See also :issue:`922`, :issue:`677`)


.. all links
.. _3.7.4 milestone:
 https://github.com/pycqa/flake8/milestone/26

3.7.3

-------------------

You can view the `3.7.3 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix imports of ``typing`` in python 3.5.0 / 3.5.1 (See also :issue:`1199`,
:issue:`674`)

- Fix ``flake8 --statistics`` (See also :issue:`920`, :issue:`675`)

- Gracefully ignore ``flake8-per-file-ignores`` plugin if installed (See also
:issue:`1201`, :issue:`671`)

- Improve error message for malformed ``per-file-ignores`` (See also
:issue:`921`, :issue:`288`)


.. all links
.. _3.7.3 milestone:
 https://github.com/pycqa/flake8/milestone/25

3.7.2

-------------------

You can view the `3.7.2 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix broken ``flake8 --diff`` (regressed in 3.7.0) (See also :issue:`919`,
:issue:`667`)

- Fix typo in plugin exception reporting (See also :issue:`908`,
:issue:`668`)

- Fix ``AttributeError`` while attempting to use the legacy api (regressed in
3.7.0) (See also :issue:`1198`, :issue:`673`)

.. all links
.. _3.7.2 milestone:
 https://github.com/pycqa/flake8/milestone/24

3.7.1

-------------------

You can view the `3.7.1 milestone`_ on GitHub for more details.

Bugs Fixed
~~~~~~~~~~

- Fix capitalized filenames in ``per-file-ignores`` setting (See also
:issue:`917`, :issue:`287`)

.. all links
.. _3.7.1 milestone:
 https://github.com/pycqa/flake8/milestone/23

3.7.0

-------------------

You can view the `3.7.0 milestone`_ on GitHub for more details.

New Dependency Information
~~~~~~~~~~~~~~~~~~~~~~~~~~

- Add dependency on ``entrypoints`` >= 0.3, < 0.4 (See also :issue:`897`,
:issue:`1197`)

- Pyflakes has been updated to >= 2.1.0, < 2.2.0 (See also :issue:`912`,
:issue:`913`)

- pycodestyle has been updated to >= 2.5.0, < 2.6.0 (See also :issue:`915`)

Features
~~~~~~~~

- Add support for ``per-file-ignores`` (See also :issue:`892`, :issue:`511`,
:issue:`911`, :issue:`277`)

- Enable use of ``float`` and ``complex`` option types (See also :issue:`894`,
:issue:`258`)

- Improve startup performance by switching from ``pkg_resources`` to
``entrypoints`` (See also :issue:`897`)

- Add metadata for use through the `pre-commit`_ git hooks framework (See also
:issue:`901`, :issue:`1196`)

- Allow physical line checks to return more than one result (See also
:issue:`902`)

- Allow `` noqa:X123`` comments without space between the colon and codes
list (See also :issue:`906`, :issue:`276`)

- Remove broken and unused ``flake8.listen`` plugin type (See also
:issue:`907`, :issue:`663`)

.. all links
.. _3.7.0 milestone:
 https://github.com/pycqa/flake8/milestone/22
.. _pre-commit:
 https://pre-commit.com/

3.6.0

-------------------

You can view the `3.6.0 milestone`_ on GitHub for more details.

New Dependency Information
~~~~~~~~~~~~~~~~~~~~~~~~~~

- pycodestyle has been updated to >= 2.4.0, < 2.5.0 (See also :issue:`1068`,
:issue:`652`, :issue:`869`, :issue:`881`, :issue:`1239`)

- Pyflakes has been updated to >= 2.0.0, < 2.1.0 (See also :issue:`655`,
:issue:`883`)

- flake8 requires python 2.x >= 2.7 or python 3.x >= 3.4 (See also
:issue:`876`)

Features
~~~~~~~~

- Add ``paths`` to allow local plugins to exist outside of ``sys.path`` (See
also :issue:`1067`, :issue:`1237`)

- Copy ``setup.cfg`` files to the temporary git hook execution directory (See
also :issue:`1299`)

- Only skip a file if `` flake8: noqa`` is on a line by itself (See also
:issue:`259`, :issue:`873`)

- Provide a better user experience for broken plugins (See also :issue:`1178`)

- Report ``E902`` when a file passed on the command line does not exist (See
also :issue:`645`, :issue:`878`)

- Add ``--extend-ignore`` for extending the default ``ignore`` instead of
overriding it (See also :issue:`1061`, :issue:`1180`)

Bugs Fixed
~~~~~~~~~~

- Respect a formatter's newline setting when printing (See also :issue:`1238`)

- Fix leaking of processes in the legacy api (See also :issue:`650`,
:issue:`879`)

- Fix a ``SyntaxWarning`` for an invalid escape sequence (See also
:issue:`1186`)

- Fix ``DeprecationWarning`` due to import of ``abc`` classes from the
``collections`` module (See also :issue:`887`)

- Defer ``setuptools`` import to improve flake8 startup time (See also
:issue:`1190`)

- Fix inconsistent line endings in ``FileProcessor.lines`` when running under
python 3.x (See also :issue:`263`, :issue:`889`)


.. all links
.. _3.6.0 milestone:
 https://github.com/pycqa/flake8/milestone/20

Links

• PyPI: https://pypi.org/project/flake8
• Changelog: https://pyup.io/changelogs/flake8/
• Repo: https://github.com/pycqa/flake8