python网页请求urllib2模块简单封装代码

对python网页请求模块urllib2进行简单的封装。

例子：

代码如下:
#!/usr/bin/python
#coding: utf-8
import base64
import urllib
import urllib2
import time

class SendRequest:
  '''
  This class use to set and request the http, and get the info of response.
  e.g. set Authorization Type, request tyep..
  e.g. get html content, state code, cookie..
  SendRequest('http://10.75.0.103:8850/2/photos/square/type.json',
              data='source=216274069', type='POST', auth='base',
     user='zl2010', password='111111')
  '''
  def __init__(self, url, data=None, type='GET', auth=None, user=None, password=None, cookie = None, **header):
    '''
    url:request, raise error if none
    date: data for post or get, must be dict type
    type: GET, POST
    auth: option, if has the value must be 'base' or 'cookie'
    user: user for auth
    password: password for auth
    cookie: if request with cookie
    other header info:
    e.g. referer='www.sina.com.cn'   
    '''
    self.url = url
    self.data = data
    self.type = type
    self.auth = auth
    self.user = user
    self.password = password
    self.cookie = cookie

    if 'referer' in header:
      self.referer = header[referer]
    else:
      self.referer = None

    if 'user-agent' in header:
      self.user_agent = header[user-agent]
    else:
      self.user_agent = None

    self.setup_request()
    self.send_request() 

  def setup_request(self):
    '''
    setup a request
    '''
    if self.url == None or self.url == '':
      raise 'The url should not empty!'

    # set request type
    #print self.url
    #print self.type
    #print self.data
    #print self.auth
    #print self.user
    #print self.password 
    if self.type == 'POST': 
      self.Req = urllib2.Request(self.url, self.data)
    elif self.type == 'GET':
      if self.data == None:
          self.Req = urllib2.Request(self.url)
      else: