postimport urlliimport urllib

#post数据
value = {}
value['username']='aaaa'
value['password']='123123'
data = urllib.urlencode(value)

#添加header
request = urllib2.Request("http://localhost/client.php")
request.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0')
request.add_header('User-ccc','Mozilla/5.0 (Windows NT 6.1; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0')

#response = urllib2.urlopen('http://www.baidu.com', timeout=10)

#response = urllib2.urlopen('http://www.baidu.com',data, 10)

response = urllib2.urlopen(request,data)
print response.read()

get  
 
import urllib 
import urllib2 
 
values = {} 
values['username'] = "1016903103@qq.com" 
values['password'] = "XXXX" 
data = urllib.urlencode(values) 
url = "http://passport.csdn.net/account/login" 
geturl = url + "?" + data 
request = urllib2.Request(geturl) 
response = urllib2.urlopen(request) 
print response.read()