Jeroen Ruigrok van der Werven wrote:
> line_nr = 0
> for line in big_file:
> line_nr += 1
> has_match = line.find('my-string')
> if has_match > 0:
> print 'Found in line %d' % (line_nr)
>
Style note:
May I suggest enumerate (I find the explicit counting somewhat clunky)
and maybe turning it into a generator (I like generators):
def lines(big_file, pattern="my string"):
for n, line in enumerate(big_file):
if pattern in line:
print 'Found in line %d' % (n)
yield n
or for direct use, how about a simple list comprehension:
lines = [n for (n, line) in enumerate(big_file) if "my string" in line]
(If you're just going to iterate over the result, that is you do not
need indexing, replace the brackets with parenthesis. That way you get a
generator and don't have to build a complete list. This is especially
useful if you expect many hits.)
Just a note.
regards
/W
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