speed up linecache.getline()

bbarbero at inescporto.pt bbarbero at inescporto.pt
Tue Oct 13 15:21:31 CEST 2009

Hi Everyone!!

I am using linecache.getline, to access to a line in a long file. It s  
really fast, appx 4seconds, but I was just wandering if any of you,  
know either another way, or there is something that I can do to speed  
it up...  thank you very much for your help!!


Quoting Chris Rebert <clp2 at rebertia.com>:

> On Wed, Oct 7, 2009 at 10:21 AM,  <bbarbero at inescporto.pt> wrote:
>> Hi again!
>> After testing the whole day, I have got my goals from the last email, but as
>> always, another issues came up! and now that Ive been able to save a list of
>> list (or multi-arrays) as below :
>> ['100.mp3\n' '10008.mp3\n' '10005.mp3\n' '10001.mp3\n' '10006.mp3\n']
>> ['10001.mp3\n' '10005.mp3\n' '100.mp3\n' '10008.mp3\n' '10006.mp3\n']
>> ['10005.mp3\n' '10001.mp3\n' '100.mp3\n' '10008.mp3\n' '10006.mp3\n']
>> ['10006.mp3\n' '10005.mp3\n' '10001.mp3\n' '100.mp3\n' '10008.mp3\n']
>> ['10008.mp3\n' '100.mp3\n' '10001.mp3\n' '10005.mp3\n' '10006.mp3\n']
>> I am not able to manipulate it again! I read it with:
>> Myfile.read() and all what I get is a str type data, what make my aim very
>> difficult to reach!  What I want, is just to read one line(one specific
>> line, so  I wouldnt have to read the whole file) and to get the numbers of
>> the songs from that line. Maybe I should save the information in another
>> way... But I just get those lines as lists, and write them in a file. Is
>> there a better way? I am very receptive to suggestions! Thanks again for
>> your help!
> Have you considered using the `json` module
> (http://docs.python.org/library/json.html) to serialize and
> deserialize the lists to/from a file in JSON format?
> The `pickle` module is another option:
> http://docs.python.org/library/pickle.html
> Cheers,
> Chris
> --
> http://blog.rebertia.com

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