Python in a Nutshell

Name

match

Synopsis

                        r.match(s,start=0,end=sys.maxint)

Returns an appropriate match object when a substring of s, starting at index start and not reaching as far as index end, matches r. Otherwise, match returns None. Note that match is implicitly anchored at the starting position start in s. To search for a match with r through s, from start onwards, call r .search, not r .match. For example, here’s how to print all lines in a file that start with digits:

import re
digs = re.compile(r'\d+')
for line in open('afile.txt'):
    if digs.match(line): print line,