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From: MRAB <python@mrabarnett.plus.com>
Date: Wed, 12 Aug 2015 23:35:57 +0100
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Xref: csiph.com comp.lang.python:95322

On 2015-08-12 22:16, Denis McMahon wrote:
[snip]

> c = [0 for i in range(24)]
> f = open(filename,'r')
> for l in f:
>      h = int(l.strip().split()[X].split(':')[Y])
>      c[h] = c[h] + 1
> f.close()
> for i in range(24):
>      print '{:02d} {}'.format(i, c[i])
>
There's no need to strip whitespace just before splitting on it.

This:

     l.strip().split()

can be shortened to this:

     l.split()