readlines with line number support? - comp.lang.python

Message from discussion readlines with line number support?

Arnaud Delobelle

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More options May 14, 2:45 pm

Newsgroups: comp.lang.python

From: Arnaud Delobelle <arno...@googlemail.com>

Date: Wed, 14 May 2008 19:45:26 +0100

Local: Wed, May 14 2008 2:45 pm

Subject: Re: readlines with line number support?

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Nikhil <mnik...@gmail.com> writes:
> Hi,

> I am reading a file with readlines method of the filepointer object
> returned by the open function. Along with reading the lines, I also
> need to know which line number of the file is read in the loop
> everytime.
> I am sure, the line should have the property/attribute which will say
> the line number of the file.

> If there is none, do I have to end up using the counter in the loop?

> fp = open("file", "r")
> lineno = 0
> for line in fp.readlines():
> print "line number: " + lineno + ": " + line.rstrip()
> lineno = lineno + 1

The standard Python way is using enumerate()

for i, line in enumerate(fp):
print "line number: " + lineno + ": " + line.rstrip()

--
Arnaud

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