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Re: Number of cells, using CSV module

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Date Thu, 16 May 2013 15:00:21 -0500
From Tim Chase <python.list@tim.thechases.com>
To Skip Montanaro <skip@pobox.com>
Subject Re: Number of cells, using CSV module
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On 2013-05-16 14:07, Skip Montanaro wrote:
> > len(reader) gives me an error.
> 
> Apologies.  len(list(reader)) should work.  Of course, you'll wind
> up loading the entire CSV file into memory.  You might want to just
> count row-by-row:
> 
> n = 0
> for row in reader:
>     n += 1

which can nicely be rewritten as

  n = sum(1 for row in reader)

:-)

-tkc

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Thread

Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 11:29 -0700
  Re: Number of cells, using CSV module Skip Montanaro <skip@pobox.com> - 2013-05-16 13:40 -0500
    Re: Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 11:50 -0700
      Re: Number of cells, using CSV module Skip Montanaro <skip@pobox.com> - 2013-05-16 14:07 -0500
      Re: Number of cells, using CSV module Tim Chase <python.list@tim.thechases.com> - 2013-05-16 15:00 -0500
  Re: Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 11:53 -0700
    Re: Number of cells, using CSV module Skip Montanaro <skip@pobox.com> - 2013-05-16 14:08 -0500
    Re: Number of cells, using CSV module Tim Chase <python.list@tim.thechases.com> - 2013-05-16 15:01 -0500
  Re: Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 13:11 -0700

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