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Re: how to read list from file

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Date Sat, 5 Oct 2013 20:24:39 -0500
From Tim Chase <python.list@tim.thechases.com>
To Harvey Greenberg <hjgreenberg@gmail.com>
Subject Re: how to read list from file
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On 2013-10-05 18:08, Harvey Greenberg wrote:
> I am looping as for L in file.readlines(), where file is csv.
> 
> L is a list of 3 items, eg, [{'a':1, 'b':2}, [1,2,3], 10] Note that
> the first item is a dir and 2nd is a list, so parsing with split
> doesn't work.  Is there a way to convert L, which is a string, to
> the list of 3 items I want?

sounds like you want ast.literal_eval():

  Python 2.7.3 (default, Jan  2 2013, 13:56:14) 
  [GCC 4.7.2] on linux2
  Type "help", "copyright", "credits" or "license" for more
  information.
  >>> s = "[{'a':1, 'b':2}, [1,2,3], 10]"
  >>> import ast
  >>> print repr(ast.literal_eval(s))
  [{'a': 1, 'b': 2}, [1, 2, 3], 10]

-tkc

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Thread

how to read list from file Harvey Greenberg <hjgreenberg@gmail.com> - 2013-10-05 18:08 -0700
  Re: how to read list from file Tim Chase <python.list@tim.thechases.com> - 2013-10-05 20:24 -0500
    Re: how to read list from file Roy Smith <roy@panix.com> - 2013-10-05 21:35 -0400
    Re: how to read list from file Harvey Greenberg <hjgreenberg@gmail.com> - 2013-10-06 09:41 -0700
      Re: how to read list from file Harvey Greenberg <hjgreenberg@gmail.com> - 2013-10-06 09:46 -0700
      Re: how to read list from file Ravi Sahni <ganeshsahni07@gmail.com> - 2013-10-06 22:20 +0530
      Re: how to read list from file Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-10-07 09:04 +0300
  Re: how to read list from file Roy Smith <roy@panix.com> - 2013-10-05 21:34 -0400
  Re: how to read list from file Terry Reedy <tjreedy@udel.edu> - 2013-10-06 02:24 -0400
  Re: how to read list from file Harvey Greenberg <hjgreenberg@gmail.com> - 2013-10-06 09:57 -0700
    Re: how to read list from file Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-10-06 18:24 +0100
    Re: how to read list from file Ravi Sahni <ganeshsahni07@gmail.com> - 2013-10-06 23:08 +0530

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