gistfile1.py

import re
from django import template

register = template.Library()

@register.filter
def gist(value):
    gist_regex = re.compile(r'http://gist\.github\.com/(?P<hash>[\d]+)/?')
    return gist_regex.sub(lambda match: u'<script src="http://gist.github.com/%s.js"></script>' % match.group('hash'), value)
gist.is_safe = True