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Re: Reading csv file

From Peter Otten <__peter__@web.de>
Subject Re: Reading csv file
Date 2013-12-17 09:55 +0100
Organization None
References <CA+FnnTwpiq=Z6tswub9vab2wxzzQycwyL2jNCgK2RTQuhGrrMQ@mail.gmail.com> <l8p1f5$gk0$1@ger.gmane.org>
Newsgroups comp.lang.python
Message-ID <mailman.4270.1387270513.18130.python-list@python.org> (permalink)

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Peter Otten wrote:

> You are still reading the complete csv file. Assuming
> 
> (1) the first row of the csv contains the column names
> (2) you want to skip the first five rows of data
> 
> you'd have to write
> 
> reader = csv.Reader(file)

Sorry, I meant DictReader, not Reader.

> line = 0
> while line < 5:
>     next(reader)
>     line += 1
> for row in reader:
>     .... # process csv row
> 
> A simpler alternative is to use itertools.islice():
> 
> for row in itertools.islice(reader, 5, None):
>     ... # process csv row

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Re: Reading csv file Peter Otten <__peter__@web.de> - 2013-12-17 09:55 +0100

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