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Bug #1560179: speed up posixpath.(dir|base)name

This commit is contained in:
Georg Brandl 2006-10-12 13:08:16 +00:00
parent 8134d06e08
commit 65ad043ea3
1 changed files with 9 additions and 4 deletions
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13
Lib/posixpath.py
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@ -106,18 +106,23 @@ def splitdrive(p):
return '', p
# Return the tail (basename) part of a path.
# Return the tail (basename) part of a path, same as split(path)[1].
def basename(p):
"""Returns the final component of a pathname"""
return split(p)[1]
i = p.rfind('/') + 1
return p[i:]
# Return the head (dirname) part of a path.
# Return the head (dirname) part of a path, same as split(path)[0].
def dirname(p):
"""Returns the directory component of a pathname"""
return split(p)[0]
i = p.rfind('/') + 1
head = p[:i]
if head and head != '/'*len(head):
head = head.rstrip('/')
return head
# Is a path a symbolic link?