[Python-Dev] os.access on Windows (original) (raw)
Tim Golden Tim.Golden at cbsoutdoor.co.uk
Fri May 20 10:38:24 CEST 2011
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There's a thread on python-list at the moment:
http://mail.python.org/pipermail/python-list/2011-May/1272505.html
which is discussing the validity of os.access results on Windows. Now we've been here before: I raised issue2528 for a previous enquiry some years ago and proffered a patch which uses the AccessCheck API to perform the equivalent check, but didn't follow through.
Someone on the new thread is suggesting -- validly -- that the docs should highlight the limitations of this call on Windows. But the docs for that call are already fairly involved:
http://docs.python.org/library/os.html#os.access
We seem to have a few options in increasing order of difficulty:
Do nothing - inform the occasional enquirer of the situation and leave it at that.
Update the docs to add something which describes what the function actually does on the Windows platform. (Whether or not we change any code).
Apply the patch in issue2528 to 3.3 and maybe 2.7
Leave os.access alone but offer alternative Windows-specific functionality in the os module or elsewhere, using essentially the code in the issue2528 patch.
As a side note, the pywin32 packages don't actually include AccessCheck at the moment. (Which makes it slightly harder to explain to people how they could do this check for themselves). It could probably be added over there which might ease the burden over here.
Opinions?
TJG Tim Golden Very Senior Analyst Programmer
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