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Groups > comp.lang.python > #89568

Re: seek operation in python

From John Gordon <gordon@panix.com>
Newsgroups comp.lang.python
Subject Re: seek operation in python
Date 2015-04-29 18:53 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <mhr9b1$h62$1@reader1.panix.com> (permalink)
References <8b2bd328-08a6-4211-85c4-8d117d1aae1e@googlegroups.com>

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In <8b2bd328-08a6-4211-85c4-8d117d1aae1e@googlegroups.com> siva sankari R <buddingrose11@gmail.com> writes:

> file=open("input","r")
> line=file.seek(7)
> print line

> The above code is supposed to print a line but it prints "none".
> I don't know where the mistake is. Help.!

The seek() function doesn't return any data; it just relocates the file
pointer.  You still have to do a read operation to get data from the
new location.

-- 
John Gordon         Imagine what it must be like for a real medical doctor to
gordon@panix.com    watch 'House', or a real serial killer to watch 'Dexter'.

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Thread

seek operation in python siva sankari R <buddingrose11@gmail.com> - 2015-04-29 11:08 -0700
  Re: seek operation in python Joel Goldstick <joel.goldstick@gmail.com> - 2015-04-29 14:17 -0400
    Re: seek operation in python siva sankari R <buddingrose11@gmail.com> - 2015-04-29 11:26 -0700
      Re: seek operation in python Billy Earney <billy.earney@gmail.com> - 2015-04-29 13:42 -0500
      Re: seek operation in python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-04-29 21:53 +0100
        Re: seek operation in python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-04-30 10:19 +1000
  Re: seek operation in python MRAB <python@mrabarnett.plus.com> - 2015-04-29 19:50 +0100
  Re: seek operation in python John Gordon <gordon@panix.com> - 2015-04-29 18:53 +0000
  Re: seek operation in python Chris Angelico <rosuav@gmail.com> - 2015-04-30 10:33 +1000
    Re: seek operation in python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 08:27 +0200
      Re: seek operation in python Chris Angelico <rosuav@gmail.com> - 2015-04-30 17:33 +1000
        Re: seek operation in python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 10:06 +0200
          Re: seek operation in python Dave Angel <davea@davea.name> - 2015-04-30 04:31 -0400
            Re: seek operation in python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 11:06 +0200
              Re: seek operation in python Chris Angelico <rosuav@gmail.com> - 2015-04-30 19:39 +1000
          Re: seek operation in python Larry Hudson <orgnut@yahoo.com> - 2015-04-30 12:38 -0700
            Re: seek operation in python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 22:50 +0200
              Re: seek operation in python Larry Hudson <orgnut@yahoo.com> - 2015-04-30 19:42 -0700
  Re: seek operation in python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 14:31 +0200

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