speed up linecache.getline()
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!! Regards, Bea Quoting Chris Rebert c...@rebertia.com: On Wed, Oct 7, 2009 at 10:21 AM, bbarb...@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 This message was sent using IMP, the Internet Messaging Program. -- http://mail.python.org/mailman/listinfo/python-list
Multi-arrays python
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! Best regards, Bea Mora This message was sent using IMP, the Internet Messaging Program. -- http://mail.python.org/mailman/listinfo/python-list
data matrix python
Good morning all! I am trying to build a data matrix, but I am not able either to write to file with a proper structure nor to get the data from the matrix. I want to sort some music by similarity content, and I just have the indexes of the playlist like this: dm = numpy.array(songs) [0 4 2 1 3] [1 2 0 4 3] [2 1 0 4 3] [3 2 1 0 4] [4 0 1 2 3] Now, I want to keep the same format but with the names of the songs, something like this: Sort_dm.append(songlist(dm)) ['100.mp3\n' '10008.mp3' '10005.mp3\n' '10001.mp3\n' '10006.mp3\n' '10001.mp3\n' '10005.mp3\n' '100.mp3\n' '10008.mp3' '10006.mp3\n' '10005.mp3\n' '10001.mp3\n' '100.mp3\n' '10008.mp3' '10006.mp3\n' '10006.mp3\n' '10005.mp3\n' '10001.mp3\n' '100.mp3\n' '10008.mp3' '10008.mp3' '100.mp3\n' '10001.mp3\n' '10005.mp3\n' '10006.mp3\n'] But there is no way either I can access to the data... because there are strings, or save them in matrix format! I could not find anything in the documentation about this! any hint would be very welcome! thank you for your time! Best regards, Bea Mora This message was sent using IMP, the Internet Messaging Program. -- http://mail.python.org/mailman/listinfo/python-list
unexpected token `;'
Hello to all! I am struggling with a script in python for a while now, and decided to look for some help. I am running a code that takes commands from Marsyas(open source for Music analysis). #!/Library/Frameworks/Python.framework/Versions/2.6/bin/python2.6 #!/bin/bashimport math import re import numpy import string import os.path import sys import commands l = /Users/bmorab/Audio_Projecto/Data/Palco/PP3_44_distance_matrix/PP3_44_5.mf Col = open(l, 'r') colist= [] songlist = [] for line in Col: #print line song = os.path.split(line)[1] #print song songlist.append(song) colist.append(line) cmd = sfplay + colist[2] print cmd fileout = commands.getoutput(cmd) print fileout It basically reads song files from the .mf file, stores them in a list and play one of the songs from the list. It does work with some music but mostly it gives an error like this: sfplay /Volumes/HAL/Datasets/Audio/PalcoPrincipal/mp3_resampled_44100/10005.mp3 sh: -c: line 1: syntax error near unexpected token `;' sh: -c: line 1: `; } 21' Ive been searching for the meaning of the error, and It really depends on the script, but I would conclude that I am missing a punctuation mark?? Thank you very much for taking your time reading my request. Looking forward to hearing from you. Regards, Bea This message was sent using IMP, the Internet Messaging Program. -- http://mail.python.org/mailman/listinfo/python-list
Extracting matrix from a text file
Hello to all!! I am new in python, and I am running it on Mac with Smultron editor. I need to read a textfile that includes numbers (in a matrix form), indexes, and strings, like this: Marsyas-kea distance matrix for MIREX 2007 Audio Similarity Exchange Q/R 1 2 3 4 5 1 0 4.54592 4.36685 5.29463 3.85728 2 4.54592 0 3.97667 5.02151 4.64284 3 4.36685 3.97667 0 4.98743 4.83683 4 5.29463 5.02151 4.98743 0 6.04393 5 3.85728 4.64284 4.83683 6.04393 0 So I just want to keep the matrix in the middle for math computations. 0 4.54592 4.36685 5.29463 3.85728 4.54592 0 3.97667 5.02151 4.64284 4.36685 3.97667 0 4.98743 4.83683 5.29463 5.02151 4.98743 0 6.04393 3.85728 4.64284 4.83683 6.04393 0 I've seen and tried a lot of ways, like split or isinstance.. but never get the wanted result does anyone have an idea, or hint? Thank you once more for your help! Best Regards, Bea This message was sent using IMP, the Internet Messaging Program. -- http://mail.python.org/mailman/listinfo/python-list
Problems in commands.getoutput(cmd) with sox
Hello to all! I am a new researcher, new to Python as well, and I have a problem, when I try to get commands from sox in a python script. I am going crazy, because this code has been working before.. so I dont really know whats going on.. Ive already seen some solutions that match with what I have. I am running this: if os.path.splitext(file_au)[1] == .au: resampled_file_path = os.path.join(resampled_path, file_au) cmd = sox + dir_file + -r 44100 + resampled_file_path print cmd output = commands.getoutput(cmd) print output What i do, is just to resample a song from dir_file to resampled_file_path. As a result of cmd I get: sox /Volumes/HAL/Datasets/Audio/gtzan_genres/rock/rock.00097.au -r 44100 /Volumes/bmorab/Audio_Projecto/Data/gtzan_genres/resampled/rock/rock.00097.au . If I run this on the command line, it will work perfectly! But The program stops at File /Volumes/bmorab/Audio_Projecto/Data/gtzan_genres/resamplingto44.py, line 35 output = commands.getoutput(cmd) ^ IndentationError: unexpected indent I dont have any idea, whats going on, I am trying lot of things, but I can understand where is the error as it has been running perfectly before. Any suggestions will be more than welcome! Thanks in advance for your help! Best regards, Beatriz Mora. This message was sent using IMP, the Internet Messaging Program. -- http://mail.python.org/mailman/listinfo/python-list
