Fixed: match='re' could produce duplicate test identifiers files.Files.regexp(pattern) now makes sure to return only one metafile for each matching virtual path, namely, the one that would be returned for that virtual path by files.Files.from_virtual_path.

import sys
if sys.version_info[0] >= 3:
	if sys.version_info[1] >= 2:
		from zipfile32 import *
	else:
		from zipfile31 import *
else:
	if sys.version_info[0] == 2 and sys.version_info[1] >= 7:
		from zipfile27 import *
	else:
		from zipfile26 import *