victorg <vgordal...@gmail.com> added the comment:
Allow negative indexes that could be usefull.
Example: to compare 2 or more Path, if they come from the same top directory
from pathlib import Path
a = Path("/a/testpy/cpython/config.log")
b = Path("/b/testpy/cpython/config.log")
c = Path("/a/otherfolder/text.txt")
print(f"a.parents[-2] == b.parents[-2] -> {a.parents[-2] == b.parents[-2]}") #
False
print(f"a.parents[-2] == c.parents[-2] -> {a.parents[-2] == c.parents[-2]}") #
True
# index = -2 because -1 is "/"
----------
nosy: +victorg
Added file: https://bugs.python.org/file48949/allowNegativeIndexParents.patch
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue21041>
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