urllib2

import urllib2
response = urllib2.urlopen('http://www.baidu.com')
html = response.read()
print html

import urllib2
req = urllib2.Request('http://www.baidu.com')
response = urllib2.urlopen(req)
page = response.read()
print page

import urllib
import urllib2

url = 'http://www.someserver.com/register.cgi'

values = {
    'name': "Lord",
    'location': 'China',
    'language': 'Python'
}
data = urllib.urlencode(values)
req = urllib2.Request(url, data)
response = urllib2.urlopen(req)
page = response.read()

import urllib
import urllib2

data = {
    'name': 'Lord',
    'location': 'China',
    'language': 'Python'
}
values = urllib.urlencode(data)
print values

url = 'http://www.example.com/example.cgi'
full_url = url + '?' + values
data = urllib2.urlopen(full_url)