01.06.18 16:58, Chris Angelico пише:
Possibly more confusing, though, is this:
os.path.exists(1)
True
os.path.exists(2)
True
os.path.exists(3)
False
I think it's testing that the file descriptors exist, because
os.path.exists is defined in terms of os.stat, which can stat a path
or an FD. So os.path.exists(fd) is True if that fd is open, and False
if it isn't. But os.path.exists is not documented as accepting FDs.
Accident of implementation or undocumented feature? Or maybe
accidental feature?
Accident of implementation. In Python 3.3 os.stat() became accepting
integer file descriptors (as os.fstat()). os.path.exists() just passes
its argument to os.stat().
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