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Python urlopen 使用小示例

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2016-06-06 11:27:09958browse

一、打开一个网页获取所有的内容

from urllib import urlopen
doc = urlopen("http://www.baidu.com").read()
print doc

二、获取Http头

from urllib import urlopen
doc = urlopen("http://www.baidu.com")
print doc.info()
print doc.info().getheader('Content-Type')

 三、使用代理

    1. 查看环境变量

print ""n".join(["%s=%s" % (k, v) for k, v in os.environ.items()])
print os.getenv("http_proxy")

    2. 设置环境变量

import   os 
os.putenv("http_proxy",   "http://proxyaddr:")

     3. 使用代理

# Use http://www.someproxy.com:3128 for http proxying
proxies = {'http': 'http://www.someproxy.com:3128'}
filehandle = urllib.urlopen(some_url, proxies=proxies)
# Don't use any proxies
filehandle = urllib.urlopen(some_url, proxies={})
# Use proxies from environment - both versions are equivalent
filehandle = urllib.urlopen(some_url, proxies=None)
filehandle = urllib.urlopen(some_url)
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