gistfile1.pyw

from typedispatch import *

@dispatch(regexmulti(r'(\d{3})\D{0,2}(\d{3})\D?(\d{4})'))
def phone_numbers(phone_numbers):
    for match in phone_numbers:
        print '-'.join(match.groups())


@dispatch()
def phone_numbers(text):
    print "Could not find a phone number :-("