Hyunchul Kim wrote:
Hi, all
I have a simple script.
Can you improve algorithm of following 10 line script, with a view point
of speed ?
Following script do exactly what I want but I want to improve the speed.
This parse a file and accumulate lines till a line match a given regular
expression.
Then, when a line match a given regular expression, this function yield
lines before the matched lines.
****************
import re
resultlist = []
cp_regularexpression = re.compile('^a complex regular expression here$)
for line in file(inputfile):
if cp_regularexpression.match(line):
if resultlist != []:
yield resultlist
resultlist = []
resultlist.append(line)
yield resultlist
****************
Thank you in advance,
It looks OK to me.
Of course, it could be the regular expression that's the slowest part.
Have you tried timing it?
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