[issue29042] os.path.exists should not throw "Embedded NUL character" exception

[Christoph Reiter]

Christoph Reiter added the comment:

Raising in case no valid path is passed seems fine to me. There are other cases where it fails:

python3 -c "import os; os.path.exists('\ud83d')"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.5/genericpath.py", line 19, in exists
    os.stat(path)
UnicodeEncodeError: 'utf-8' codec can't encode character '\ud83d' in position 0: surrogates not allowed


LANG=C python3 -c "import os; os.path.exists('\xff')"       ~
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.5/genericpath.py", line 19, in exists
    os.stat(path)
UnicodeEncodeError: 'ascii' codec can't encode character '\xff' in position 0: ordinal not in range(128)

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nosy: +lazka

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<http://bugs.python.org/issue29042>
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