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GH-110488: Fix two small issues in pathlib.PurePath.with_name() (#110651)

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Ensure that `PurePath('foo/a').with_name('.')` raises `ValueError`

Ensure that `PureWindowsPath('foo/a').with_name('a:b')` does not raise
`ValueError`.
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Barney Gale 2023-10-11 04:45:11 +01:00 • committed by GitHub
parent 790ecf6302
commit b5f7777cb3
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3 changed files with 15 additions and 6 deletions
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Lib/pathlib.py
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@ -603,8 +603,7 @@ class PurePath:
if not self.name:
raise ValueError("%r has an empty name" % (self,))
m = self.pathmod
drv, root, tail = m.splitroot(name)
if drv or root or not tail or m.sep in tail or (m.altsep and m.altsep in tail):
if not name or m.sep in name or (m.altsep and m.altsep in name) or name == '.':
raise ValueError("Invalid name %r" % (name))
return self._from_parsed_parts(self.drive, self.root,
self._tail[:-1] + [name])