Python實現批量下載文件

 　　之前給大家分享的python 多線程抓取網頁，不過這個只能用python 來抓取到網頁的源代碼，如果你想用做python 下載文件的話，上面的可能就不適合你了，最近我在用python 做文件下載的時候就遇到這個問題了，不過最終得以解決，我把代碼發出來

　　Python實現批量下載文件

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 #!/usr/bin/env python # -*- coding:utf-8 -*-   from gevent import monkey monkey.patch_all() from gevent.pool import Pool import requests import sys import os   def download(url): chrome = 'Mozilla/5.0 (X11; Linux i86_64) AppleWebKit/537.36 ' + '(KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36' headers = {'User-Agent': chrome} filename = url.split('/')[-1].strip() r = requests.get(url.strip(), headers=headers, stream=True) with open(filename, 'wb') as f: for chunk in r.iter_content(chunk_size=1024): if chunk: f.write(chunk) f.flush() print filename,"is ok"   def removeLine(key, filename): os.system('sed -i /%s/d %s' % (key, filename))   if __name__ =="__main__": if len(sys.argv) == 2: filename = sys.argv[1] f = open(filename,"r") p = Pool(4) for line in f.readlines(): if line: p.spawn(download, line.strip()) key = line.split('/')[-1].strip() removeLine(key, filename) f.close() p.join() else: print 'Usage: python %s urls.txt' % sys.argv[0]

　　其他網友的方法：

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 from os.path import basename from urlparse import urlsplit def url2name(url): return basename(urlsplit(url)[2])   def download(url, localFileName = None): localName = url2name(url) req = urllib2.Request(url) r = urllib2.urlopen(req) if r.info().has_key('Content-Disposition'): # If the response has Content-Disposition, we take file name from it localName = r.info()['Content-Disposition'].split('filename=')[1] if localName[0] == '"' or localName[0] == "'": localName = localName[1:-1] elif r.url != url: # if we were redirected, the real file name we take from the final URL localName = url2name(r.url) if localFileName: # we can force to save the file as specified name localName = localFileName f = open(localName, 'wb') f.write(r.read()) f.close()   download(r'你要下載的python文件的url地址')

　　以上便是本文給大家分享的全部內容了，小伙伴們可以測試下哪種方法效率更高呢。