http-range

I am trying to download the buffer of file into 5 threads but it seems like it's getting garbled. from numpy import arange import requests from threading import Thread import urllib2 url = 'http://pymotw.com/2/urllib/index.html' sizeInBytes = r = requests.head(url, headers={'Accept-Encoding': 'identity'}).headers['content-length'] splitBy = 5 splits = arange(splitBy + 1) * (float(sizeInBytes)/splitBy) dataLst = [] def bufferSplit(url, idx, splits): req = urllib2.Request(url, headers={'Range': 'bytes=%d-%d' % (splits[idx], splits[idx+1])}) print {'bytes=%d-%d' % (splits[idx], splits[idx+1])}