New submission from Mark Hammond <hamm...@finleme.com>:
Comparing two paths, PurePath.relative_to fails with ValueError if the second
path is not in the first.
>>> Path('/a/b').relative_to('/a/b/c')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.9/pathlib.py", line 928, in relative_to
raise ValueError("{!r} is not in the subpath of {!r}"
ValueError: '/a/b' is not in the subpath of '/a/b/c' OR one path is relative
and the other is absolute.
Please extend PurePath.relative_to so it is able to output a relative path in
form of '..' instead of an error. Currently, the only way to do this is to use
relpath from os.path but it would be very useful if Path was able to output the
relative path.
----------
components: Library (Lib)
messages: 393262
nosy: mhammondr
priority: normal
severity: normal
status: open
title: Output relative path when using PurePath.relative_to
type: enhancement
versions: Python 3.9
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue44078>
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