Python开发中时长遇到要下载文件的情况,最常用的方法就是通过Http利用urllib或者urllib2模块。
当然你也可以利用ftplib从ftp站点下载文件。此外Python还提供了另外一种方法requests。
下面来看看三种方法是如何来下载zip文件的:
方法一:
import urllib import urllib2 import requests print "downloading with urllib" url = 'http://www.pythontab.com/test/demo.zip' print "downloading with urllib" urllib.urlretrieve(url, "demo.zip")
方法二:
import urllib2 print "downloading with urllib2" url = 'http://www.pythontab.com/test/demo.zip' f = urllib2.urlopen(url) data = f.read() with open("demo2.zip", "wb") as code: code.write(data)
方法三:
import requests print "downloading with requests" url = 'http://www.pythontab.com/test/demo.zip' r = requests.get(url) with open("demo3.zip", "wb") as code: code.write(r.content)
看起来使用urllib最为简单,一句语句即可。当然你可以把urllib2缩写成:
f = urllib2.urlopen(url)
with open("demo2.zip", "wb") as code:
code.write(f.read())
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