On Tue, 02 Sep 2008 10:36:50 -0700, hofer wrote: > sed 's/\.\..*//' \ ### remove '//' comments | sed 's/#.*//'
Comment does not match the code. Or vice versa. :-) Untested: from __future__ import with_statement from itertools import ifilter, ifilterfalse, imap def is_junk(line): line = line.rstrip() return not line or line.startswith('//') or line.startswith('#') def extract_numbers(line): result = map(int, line.split()[:2]) assert len(result) == 2 return result def main(): with open('test.txt') as lines: clean_lines = ifilterfalse(is_junk, lines) pairs = imap(extract_numbers, clean_lines) print '\n'.join(b for a, b in pairs if a + b == 42) if __name__ == '__main__': main() Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list