Use the python port of libphonenumber to check that a phone number is of the correct length.

README.md

Installing

pip install phonenumbers

Using

$ python length_check.py +17075559876 Prints 'True'

$ python length_check.py +170755598764533 Prints 'False'

correct_length.py

import argparse

import phonenumbers as p

parser = argparse.ArgumentParser(description='Process some integers.')
parser.add_argument('phonenumber', type=str, action="store",
    help='The phone number you want to check.')

args = parser.parse_args()

number_object = p.parse(args.phonenumber)
if p.is_valid_number(number_object) is False:
    print "False"
else:
    print "True"