raise
-# Return the longest common sub-path of the sequence of paths given as input.
+# Return the longest common sub-path of the iterable of paths given as input.
# The function is case-insensitive and 'separator-insensitive', i.e. if the
# only difference between two paths is the use of '\' versus '/' as separator,
# they are deemed to be equal.
#
# However, the returned path will have the standard '\' separator (even if the
# given paths had the alternative '/' separator) and will have the case of the
-# first path given in the sequence. Additionally, any trailing separator is
+# first path given in the iterable. Additionally, any trailing separator is
# stripped from the returned path.
def commonpath(paths):
- """Given a sequence of path names, returns the longest common sub-path."""
-
+ """Given an iterable of path names, returns the longest common sub-path."""
+ paths = tuple(map(os.fspath, paths))
if not paths:
- raise ValueError('commonpath() arg is an empty sequence')
+ raise ValueError('commonpath() arg is an empty iterable')
- paths = tuple(map(os.fspath, paths))
if isinstance(paths[0], bytes):
sep = b'\\'
altsep = b'/'
self.assertRaises(exc, ntpath.commonpath,
[os.fsencode(p) for p in paths])
+ self.assertRaises(TypeError, ntpath.commonpath, None)
self.assertRaises(ValueError, ntpath.commonpath, [])
+ self.assertRaises(ValueError, ntpath.commonpath, iter([]))
check_error(ValueError, ['C:\\Program Files', 'Program Files'])
check_error(ValueError, ['C:\\Program Files', 'C:Program Files'])
check_error(ValueError, ['\\Program Files', 'Program Files'])
check_error(ValueError, ['Program Files', 'C:\\Program Files'])
+
check(['C:\\Program Files'], 'C:\\Program Files')
check(['C:\\Program Files', 'C:\\Program Files'], 'C:\\Program Files')
check(['C:\\Program Files\\', 'C:\\Program Files'],