Gregory P. Smith <g...@krypto.org> added the comment:
>>> os.environ['FOO']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.5/UserDict.py", line 22, in __getitem__
raise KeyError(key)
KeyError: 'FOO'
>>> os.environ.get('FOO')
>>> os.environ.get('FOO', 'bar')
'bar'
% export FOO=
% python2.5
>>> import os
>>> os.environ['FOO']
''
An environment variable set to '' is valid and is still considered set
(thats how the environment works).
----------
nosy: +gregory.p.smith
resolution: -> invalid
status: open -> closed
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue5253>
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