Steve Dower <[email protected]> added the comment:
You use this by getting the file descriptor/fileno for an open file, and then
testing whether it's a file or not:
>>> f=open("python.bat")
>>> f.fileno()
3
>>> import os
>>> os.path.isfile(3)
True
This is very uncommon on Windows to begin with (file descriptors are emulated
by the C Runtime for POSIX compatibility), but it is supported.
Enabling Modules/posixmodule.c#L2446 to be able to optionally handle the
OverflowError would allow the "exists" type functions to just return False
instead of raising, while letting the others continue to raise.
I'm going to mark this as "easy (C)" so that we consider it for sprints. But in
principle, I'm okay with returning False for invalid values in exists-type
functions rather than raising.
----------
components: +Argument Clinic -Library (Lib), Windows
keywords: +easy (C)
nosy: +larry
versions: +Python 3.9 -Python 3.7
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