Add py to requirements

[cdce8p]

Description

The py package is used in a number of test files without being an explicit dependency. On linux it is installed with either pytest-xdist or tox, but that doesn't cover pypy, windows, and macos. If these environments are rebuild from scratch, the tests would fail.

https://github.com/PyCQA/pylint/blob/004fc7483ff6cd99ddd19dd6a572011797b138b0/tests/test_self.py#L30

https://github.com/PyCQA/pylint/blob/004fc7483ff6cd99ddd19dd6a572011797b138b0/tests/test_self.py#L164-L166

https://github.com/PyCQA/pylint/blob/004fc7483ff6cd99ddd19dd6a572011797b138b0/tests/test_pylint_runners.py#L17

[Pierre-Sassoulas]

Should we change the typing instead ? I suppose there is no LocalPath fixture used by pytest on Windows or they would use the dependency themself.

[cdce8p]

Should we change the typing instead ? I suppose there is no LocalPath fixture used by pytest on Windows or they would use the dependency themself.

With the latest release of pytest, they started vendoring the parts of the py package. However, the docs still mention py._path.local.LocalPath as return type. https://docs.pytest.org/en/7.1.x/reference/reference.html#tmpdir

[coveralls]

Pull Request Test Coverage Report for Build 3360243381

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.377%

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Totals
Change from base Build 3359757897:	0.0%
Covered Lines:	17205
Relevant Lines:	18039

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💛 - Coveralls

[github-actions]

🤖 Effect of this PR on checked open source code: 🤖

Effect on pytest:
The following messages are now emitted:

Details

1. inconsistent-return-statements:
   Either all return statements in a function should return an expression, or none of them should.
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/pytester.py#L301
2. no-name-in-module:
   No name 'NOSE_SUPPORT_METHOD' in module '_pytest.deprecated'
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/python.py#L62
3. no-name-in-module:
   No name 'PytestReturnNotNoneWarning' in module '_pytest.warning_types'
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/python.py#L81
4. inconsistent-return-statements:
   Either all return statements in a function should return an expression, or none of them should.
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/python.py#L1085
5. inconsistent-return-statements:
   Either all return statements in a function should return an expression, or none of them should.
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/fixtures.py#L130
6. inconsistent-return-statements:
   Either all return statements in a function should return an expression, or none of them should.
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/python_api.py#L798
7. no-name-in-module:
   No name 'NOSE_SUPPORT' in module '_pytest.deprecated'
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/nose.py#L5
8. no-name-in-module:
   No name 'warn_explicit_for' in module '_pytest.warning_types'
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/config/__init__.py#L62
9. no-member:
   Module '_pytest.deprecated' has no 'HOOK_LEGACY_MARKING' member
   https://github.com/pytest-dev/pytest/blob/8e2de91bf85118c9d992c26cb488ddcf30dbdb66/src/_pytest/config/__init__.py#L369

This comment was generated for commit d6834ec