[easy] test_distutils logs 3 DeprecationWarning warnings

[vstinner]

BPO	43840
Nosy	@vstinner, @tirkarthi
Superseder	bpo-41282: Deprecate and remove distutils

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2021-04-14.14:06:08.853>
created_at = <Date 2021-04-14.11:06:17.809>
labels = ['easy', 'tests']
title = '[easy] test_distutils logs 3 DeprecationWarning warnings'
updated_at = <Date 2021-04-14.14:06:08.852>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2021-04-14.14:06:08.852>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2021-04-14.14:06:08.853>
closer = 'vstinner'
components = ['Tests']
creation = <Date 2021-04-14.11:06:17.809>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 43840
keywords = ['easy', 'newcomer friendly']
message_count = 4.0
messages = ['391054', '391055', '391075', '391078']
nosy_count = 2.0
nosy_names = ['vstinner', 'xtreak']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '41282'
type = None
url = 'https://bugs.python.org/issue43840'
versions = []

[vstinner]

test_distutils logs 3 DeprecationWarning warnings. They are emitted on purpose and related to PEP-632.

Does someone want to propose a fix for that?

"with self.assertWarns(DeprecationWarning):" or warnings_helper.check_warnings() of test.support.warnings_helper can be used.

$ ./python -m test -v test_distutils 
(...)
0:00:00 load avg: 5.49 [1/1] test_distutils
/home/vstinner/python/master/Lib/test/test_distutils.py:8: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
  import distutils.tests

(...)

test_byte_compile_optimized (distutils.tests.test_build_py.BuildPyTestCase) ... /tmp/tmpptdx9r50.py:1: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP-632 for potential alternatives
from distutils.util import byte_compile
ok

(...)

test_byte_compile (distutils.tests.test_install_lib.InstallLibTestCase) ... /tmp/tmpk_cfc09q.py:1: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP-632 for potential alternatives
from distutils.util import byte_compile
ok

(...)

Tests result: SUCCESS

--

By the way, it would be nice to ignore the DeprecationWarning in setup.py as well for now:

$ make
(...)
/home/vstinner/python/master/./setup.py:33: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
  from distutils import log
(...)

This warning is annoying.

[vstinner]

Another warning:

$ ./python -m test -v test_check_c_globals
(...)
DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
  import distutils.ccompiler
(...)
Tests result: SUCCESS

[tirkarthi]

I have reported this in the original issue earlier https://bugs.python.org/issue41282#msg388224 . See also https://bugs.python.org/issue43425 for more discussion over handling this.

[vstinner]

Ok, let's reuse bpo-41282.

I created PR 25405 and PR 25406.