Python開發中時長遇到要下載檔案的情況,最常用的方法就是透過Http利用urllib或者urllib2模組。
當然你也可以利用ftplib從ftp站點下載檔案。此外Python還提供了另外一種方法requests。
下面來看看三種方法是如何來下載zip檔案的:
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)
看起來使用urllib最為簡單,一句語句即可。當然你可以把urllib2縮寫成:
f = urllib2.urlopen(url)
with open("demo2.zip", "wb") as code:
code.write(f.read())