gistfile1.py

import re

f1 = 'my movie title #12'
f2 = 'my other movie title'

my_regex = re.compile(r'^(?P<movie>.*)( #(?P<version>\d+))$')

result = re.match(my_regex, f1)
if result:
    print result.groupdict()
else:
    print 'couldnt match'
    
result = re.match(my_regex, f2)
if result:
    print result.groupdict()
else:
    print 'couldnt match'