Patch #536661: Improve performance of splitext. Add test_macpath.
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 6a0640d..4a92f18 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -78,20 +78,11 @@
def splitext(p):
"""Split the extension from a pathname. Extension is everything from the
last dot to the end. Returns "(root, ext)", either part may be empty."""
- root, ext = '', ''
- for c in p:
- if c == '/':
- root, ext = root + ext + c, ''
- elif c == '.':
- if ext:
- root, ext = root + ext, c
- else:
- ext = c
- elif ext:
- ext = ext + c
- else:
- root = root + c
- return root, ext
+ i = p.rfind('.')
+ if i<=p.rfind('/'):
+ return p, ''
+ else:
+ return p[:i], p[i:]
# Split a pathname into a drive specification and the rest of the