verbose_regex.py

import re

re.compile(
'''

    (\d{3}) 	# Search for 3 digits and group them.
    \D*			# Followed by 0 or more non digit characters.
    (\d{3})		# Followed by 3 digits grouped.
    \D*			# Followed by 0 or more non digit characters.
    (\d{4})		# Followed by 4 digits grouped.
    \D*			# Followed by 0 or more non digit characters.
    (\d*)$		# Followed by 0 or more digits until the end of the string.

    ''',
    re.UNICODE | re.VERBOSE)