root/gapp/pangramming/utils.py

import re

pangram_r = re.compile(r'[^A-Za-z]', re.UNICODE)
tags_r = re.compile(r'\<.*?\>|^http://(?:.*?)\.[a-z]{1,6}', re.UNICODE)

def bare_pangram(pangram):
    return pangram_r.sub('', pangram.lower())

def is_pangram(pangram):
    alphabet = 'abcdefghijklmnpqrstuvwxyz'
    for letter in alphabet:
        if letter not in pangram.lower():
            return False
    else:
        return True

def strip_tags(input):
    return tags_r.sub('', input)