On Fri, Feb 22, 2019 at 09:21:07PM +0100, Karsten Hilbert wrote:
> Am I confused ?
>
> ncq@hermes:~$ python3
> Python 3.7.2+ (default, Feb 2 2019, 14:31:48)
> [GCC 8.2.0] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import os
> >>> print(os.supports_follow_symlinks)
> {<built-in function utime>, <built-in function chown>, <built-in
> function access>, <built-in function stat>, <built-in function link>}
> >>> os.chmod in os.supports_follow_symlinks
> False
> >>> os.chmod('/tmp/test', 0o0700, follow_symlinks = False)
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> NotImplementedError: chmod: follow_symlinks unavailable on this platform
> >>>
>
> I would only have expected this exception when I actually
> request the unavailable functionality, like so:
>
> os.chmod('/tmp/test', 0o0700, follow_symlinks = True)
>
> This, however, works:
>
> os.chmod('/tmp/test', 0o0700)
>
> DESPITE the documentation saying
>
> os.chmod(path, mode, *, dir_fd=None, follow_symlinks=True)
>
> IOW, the default for <follow_symlinks> being "True", which is
> certainly illogical to succeed when it is not even supported
> on this platform.
Because, naively, I'd have assumed this to work:
os.chmod(directory, mode, follow_symlinks = (os.chmod in
os.supports_follow_symlinks))
Karsten
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