New submission from Eryk Sun:
importlib ignores the PYTHONCASEOK environment variable on Windows. _relax_case
checks for b'PYTHONCASEOK' in os.environ, which is never true because
os.environ is Unicode. On Windows, _make_relax_case should return a function
that instead checks for 'PYTHONCASEOK'.
The following test demonstrates that case-insensitive imports otherwise appear
to work correctly in 3.5:
>>> import sys, importlib, glob
>>> glob.glob('*.py')
['Test.py']
>>> importlib._bootstrap_external._relax_case()
False
>>> import test
>>> test.__file__
'C:\\Program Files\\Python35\\lib\\test\\__init__.py'
patched:
>>> src = "_relax_case = lambda: 'PYTHONCASEOK' in _os.environ"
>>> exec(src, vars(importlib._bootstrap_external))
>>> importlib._bootstrap_external._relax_case()
True
>>> del sys.modules['test']
>>> import test
this is a test
>>> test.__file__
'C:\\Temp\\test.py'
It would be better if __file__ were the actual filename "Test.py" instead of
"test.py".
----------
components: Library (Lib), Windows
keywords: easy
messages: 266057
nosy: brett.cannon, eryksun, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
stage: needs patch
status: open
title: PYTHONCASEOK is ignored on Windows
type: behavior
versions: Python 3.5, Python 3.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue27083>
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