gistfile1.txt

import re


tag = re.compile(r'\{% ?([^ ]+(?: [^ ]+)*) ?%\}')
rules = {
  'static': lambda x: 'statistically',
  'page': lambda x: 'paging '+x[0]+' up to',
}
def replace(m):
    args = m.groups()[0].split(' ')
    cmd = args.pop(0)
    try:
        return rules[cmd](args)
    except:
        return ''


if __name__ == '__main__':
    corpus ='''
        lary
        This is text and {% static %} is right here.
        stuffy
        url = "{% page what %}">/></>
        stuff {% lastly one two three %}

    '''

    tests = [
        '{% static %}',
        '{% page what %}',
        '{%static %}',
        '{% static%}',
        '{%static%}',
        '{% static one two %}',
        '{%static one two %}',
        '{% static one two%}',
        '{%static one two%}',
        '{ static one two %}',
    ]

    for x in tests:
        print 'pass:' if tag.match(x) else 'fail:', x

    print tag.sub(replace, corpus)