# DKUUG PYTHON LECTURE March 25 2008
# Copyright 2008 Svenne Krap. 
# This software is released under the BSD license.
# Please see the attached license

log_frag = """OK: 24
ERROR: A
ERROR: B
OK: 27
OK: 81
OK: 54
ERROR: A"""

for line in log_frag.split("\n"):
    if line.startswith("ERROR:"): print line