Python3 download large files with requests 2.x

Environment

• Os:windows x64

• python:3.6.5 x64

• requests:2.18.4

Code

# encoding=utf-8# author: walker# date: 2018-06-11# summary:  use   requests  download large file import timeimport requests#  Download a large file Def downonefile (srcUrl,  LocalFile):     print ('%s\n --->>>\n  %s '  %  (SRCURL,  localfile))         starttime = time.time ()      with requests.get (srcurl, stream=true)  as r:         contentlength = int (r.headers[' content-length '))          line =  ' CONTENT-LENGTH: %DB/ %.2FKB/ %.2FMB '          line = line %  (contentlength, contentlength/1024,  contentlength/1024/1024)         print (line)          downsize =  0        with open (localfile,  ' WB ')  as f:             for chunk in r.iter_content ( 8192):                if  chunk:                     f.write (Chunk)                  downsize += len (Chunk)                  line =  '%d kb/s - %.2f mb,  Total  %.2f  MB '                 line  = line %  (downsize/1024/(Time.time ()-starttime), downsize/1024/1024,  contentlength/1024/1024) &NBSp;               print (line,  End= ' \ R ')                 if  downSize >= contentLength:                     break         timecost = time.time ()  - startTime         line =  ' Total time: %.2f s,  average speed:  %.2f kb/s '          line = line %  (timecost, downsize/1024/timecost)          print (line) if __name__ ==  ' __main__ ':     srcurl  = r ' http://cachefly.cachefly.net/100mb.test '     localfile = r ' d:\ Python3project\test\out\out.test ' &Nbsp;   downonefile (Srcurl, localfile) 

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"Related reading"

• Requests Official document: Http://docs.python-requests.org
  

Walker * * *

Python3 download large files with requests 2.x