利用程序自己编写下载文件挺有意思的。Python中最流行的方法就是通过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。
来看看三种方法是如何来下载zip文件的：
1 import urllib 2 import urllib2 3 import requests 4 5 url = 'http://www.blog.pythonlibrary.org/wp-content/uploads/2012/06/wxDbViewer.zip' 6 7 print "downloading with urllib" 8 urllib.urlretrieve(url, "code.zip") 9 10 print "downloading with urllib2" 11 f = urllib2.urlopen(url) 12 data = f.read() 13 with open("code2.zip", "wb") as code: 14 code.write(data) 15 16 print "downloading with requests" 17 r = requests.get(url) 18 with open("code3.zip", "wb") as code: 19 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：
1 f = urllib2.urlopen(url) with open("code2.zip", "wb") as code: 2 code.write(f.read())
具体点的可以看看：http://www.blog.pythonlibrary.org/2012/06/07/python-101-how-to-download-a-file/