diff options
Diffstat (limited to 'Lib/pathlib/_abc.py')
| -rw-r--r-- | Lib/pathlib/_abc.py | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/Lib/pathlib/_abc.py b/Lib/pathlib/_abc.py index 27c6b4e..44fea52 100644 --- a/Lib/pathlib/_abc.py +++ b/Lib/pathlib/_abc.py @@ -313,7 +313,14 @@ class PurePathBase: def with_stem(self, stem): """Return a new path with the stem changed.""" - return self.with_name(stem + self.suffix) + suffix = self.suffix + if not suffix: + return self.with_name(stem) + elif not stem: + # If the suffix is non-empty, we can't make the stem empty. + raise ValueError(f"{self!r} has a non-empty suffix") + else: + return self.with_name(stem + suffix) def with_suffix(self, suffix): """Return a new path with the file suffix changed. If the path @@ -324,6 +331,7 @@ class PurePathBase: if not suffix: return self.with_name(stem) elif not stem: + # If the stem is empty, we can't make the suffix non-empty. raise ValueError(f"{self!r} has an empty name") elif suffix.startswith('.') and len(suffix) > 1: return self.with_name(stem + suffix) |