import re

with_tab = "--- tab.py\t2009-12-27\n"
with_space = "+++ space.py 2009-12-28\n"

for line in (with_tab, with_space):
    match = re.match("\S{3}\s"
                    "(?P<file>\w?\:?(?:[\/\\]?[\w\.])*)\s+"
                    "(?P<date>.*)", line)
    print("{0} - {1}".format(match.group("file"), match.group("date")))