[New-bugs-announce] [issue33748] test_discovery_failed_discovery in test_unittest modifies sys.path

[Serhiy Storchaka]

New submission from Serhiy Storchaka <storchaka+cpython at gmail.com>:

$ ./python -m test -v -m test_discovery_failed_discovery test_unittest
...
Warning -- sys.path was modified by test_unittest
  Before: (139720094056760, ['/home/serhiy/py/cpython', '/usr/local/lib/python38.zip', '/home/serhiy/py/cpython/Lib', '/home/serhiy/py/cpython/build/lib.linux-x86_64-3.8-pydebug', '/home/serhiy/.local/lib/python3.8/site-packages'], ['/home/serhiy/py/cpython', '/usr/local/lib/python38.zip', '/home/serhiy/py/cpython/Lib', '/home/serhiy/py/cpython/build/lib.linux-x86_64-3.8-pydebug', '/home/serhiy/.local/lib/python3.8/site-packages'])
  After:  (139720094056760, ['/home/serhiy/py/cpython', '/usr/local/lib/python38.zip', '/home/serhiy/py/cpython/Lib', '/home/serhiy/py/cpython/build/lib.linux-x86_64-3.8-pydebug', '/home/serhiy/.local/lib/python3.8/site-packages'], ['/home/serhiy/py/cpython/build/test_python_8308/package', '/home/serhiy/py/cpython', '/usr/local/lib/python38.zip', '/home/serhiy/py/cpython/Lib', '/home/serhiy/py/cpython/build/lib.linux-x86_64-3.8-pydebug', '/home/serhiy/.local/lib/python3.8/site-packages']) 
test_unittest failed (env changed)

----------
components: Tests
messages: 318535
nosy: ezio.melotti, michael.foord, rbcollins, serhiy.storchaka
priority: normal
severity: normal
status: open
title: test_discovery_failed_discovery in test_unittest modifies sys.path
type: behavior
versions: Python 3.6, Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33748>
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