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Groups > comp.lang.python > #63911

Re: Python Fast I/o

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On 2014-01-14 05:50, Ayushi Dalmia wrote:
> I need to write into a file for a project which will be evaluated
> on the basis of time. What is the fastest way to write 200 Mb of
> data, accumulated as a list into a file.
> 
> Presently I am using this:
> 
> with open('index.txt','w') as f:
>       f.write("".join(data))
>       f.close()
> 
> where data is a list of strings which I want to dump into the
> index.txt file -- 

Most file-like objects should support a writelines() method which
takes an iterable and should save you the trouble of joining all the
content (and as Chris noted, you don't need the .close() since the
with handles it) so the whole thing would condense to:

  with open('index.txt', 'w') as f:
    f.writelines(data)

-tkc

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Thread

Python Fast I/o Ayushi Dalmia <ayushidalmia2604@gmail.com> - 2014-01-14 05:50 -0800
  Re: Python Fast I/o Chris Angelico <rosuav@gmail.com> - 2014-01-15 01:03 +1100
    Re: Python Fast I/o Ayushi Dalmia <ayushidalmia2604@gmail.com> - 2014-01-14 06:24 -0800
      Re: Python Fast I/o Chris Angelico <rosuav@gmail.com> - 2014-01-15 01:32 +1100
      Re: Python Fast I/o Roy Smith <roy@panix.com> - 2014-01-14 09:40 -0500
  Re: Python Fast I/o Tim Chase <python.list@tim.thechases.com> - 2014-01-14 08:18 -0600

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