Regular expression to match start of filename and filename extension

Question

What is the regular expression to match strings (in this case, file names) that start with \'Run\' and have a filename extension of \'.py\'?

The regular expression s

Answer 1

If you write a slightly more complex regular expression, you can get an extra feature: extract the bit between "Run" and ".py":

>>> import re
>>> regex = '^Run(?P.*)\.py$'
>>> m = re.match(regex, 'RunFoo.py')
>>> m.group('name')
'Foo'

(the extra bit is the parentheses and everything between them, except for '.*' which is as in Rob Howard's answer)