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Groups > comp.lang.python > #40161

Re: Read csv file and create a new file

References <512fac9c$0$40355$4fafbaef@reader1.news.tin.it>
Date 2013-02-28 14:34 -0500
Subject Re: Read csv file and create a new file
From Joel Goldstick <joel.goldstick@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.2668.1362080055.2939.python-list@python.org> (permalink)

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On Thu, Feb 28, 2013 at 2:14 PM, io <maroso@libero.it> wrote:

> Hi,
>
> i have to files.
>
> First file is a csv file
> Second file is a plain text file where each row has a value (text)
>

Read the second file so that you have a list of each of its values

Read the first file line by line.  Check if the value at the beginning of
the line is in the list of values from the second file.  If not, print it
to outfile.

You should look up split method on strings to split a string separated by
whitespace.

>
> I want to be able to create a third file using data from the first file
> excluding the values listed in the second file.
>
> Example:
>
> First file:
> -----------
>
> mtgoxeur        12      24      36
> mtgoxusd        10      12      14
> mtgoxpln        2       4       6
>
>
> Second file:
> ------------
>
> mtgoxusd
>
>
>
> Third File (the resulting one) :
> --------------------------------
>
> mtgoxeur        12      24      36
> mtgoxpln        2       4       6
>
>
>
> Thanks to anyone that can help
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
Joel Goldstick
http://joelgoldstick.com

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Thread

Read csv file and create a new file io <maroso@libero.it> - 2013-02-28 19:14 +0000
  Re: Read csv file and create a new file Neil Cerutti <neilc@norwich.edu> - 2013-02-28 19:32 +0000
  Re: Read csv file and create a new file Joel Goldstick <joel.goldstick@gmail.com> - 2013-02-28 14:34 -0500
  Re: Read csv file and create a new file Dave Angel <davea@davea.name> - 2013-02-28 14:35 -0500
  Re: Read csv file and create a new file io <maroso@libero.it> - 2013-02-28 19:51 +0000
    Re: Read csv file and create a new file Neil Cerutti <neilc@norwich.edu> - 2013-02-28 20:11 +0000
      Re: Read csv file and create a new file io <maroso@libero.it> - 2013-02-28 20:23 +0000
        Re: Read csv file and create a new file io <maroso@libero.it> - 2013-02-28 20:46 +0000
          Re: Read csv file and create a new file io <maroso@libero.it> - 2013-02-28 20:51 +0000
          Re: Read csv file and create a new file Dave Angel <davea@davea.name> - 2013-02-28 16:23 -0500
            Re: Read csv file and create a new file io <maroso@libero.it> - 2013-02-28 22:05 +0000
              Re: Read csv file and create a new file Dave Angel <davea@davea.name> - 2013-02-28 19:13 -0500
  Re: Read csv file and create a new file Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-02-28 21:04 -0500
    Re: Read csv file and create a new file io <maroso@libero.it> - 2013-03-04 19:04 +0000
      Re: Read csv file and create a new file Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-03-04 23:58 +0000

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