python 模拟登陆人人网，并发文字状态

这几天一直在学习用python 爬取网页， 今天试着写了一个小程序， 模拟登陆 人人网，并且提供了发送文字状态的函数。在登录的时候，已经可以处理有验证码的 情况 ，就拿来练手吧。 （在处理字符串的部分比较麻烦===因为不敢用正则表达式QAQ ）

代码：

# -*- coding: utf-8 -*-
import urllib2,urllib,cookielib,json,sys
from bs4 import BeautifulSoup

###
reload(sys)     
sys.setdefaultencoding('utf8') 
##

##cookie
cookiejar= cookielib.CookieJar()
cookproc= urllib2.HTTPCookieProcessor(cookiejar)
###

###get the page

def get(url,headers=False):
	if headers:
		req=urllib2.Request(url,headers)
	else:
		req=urllib2.Request(url)
	opener=urllib2.build_opener(cookproc)
	urllib2.install_opener(opener)

	page=urllib2.urlopen(req)
	try:
		page=page.decode('utf-8')
	except :
		page=page.decode('gbk','ignore')
	return page


def post(url,postdata,headers=False):
	postdata=urllib.urlencode(postdata)
	
	if headers:
		req=urllib2.Request(url,postdata,headers)
	else :
		req=urllib2.Request(url,postdata)
	opener=urllib2.build_opener(cookproc)
	urllib2.install_opener(opener)

	page=urllib2.urlopen(req).read()
	
	try:
		page=page.decode('utf-8')
	except :
		page=page.decode('gbk','ignore')
	return page


class RenRen:
	email		=""
	pwd			=""
	_id			=""
	name		=""
	icode		=""
	_rtk		=""
	_tok		=""

	def __init__(self,email,pwd):
		self.email=email
		self.pwd=pwd
		self.check()
		self.login()


	def check(self):
		postdata={
		'_rtk'			:self._rtk,
		'email'			:self.email
		}
		url='http://www.renren.com/ajax/ShowCaptcha'
		if post(url,postdata)==1:
			self.getCode()
	
	def getCode(self):
		par={		
			't'			:'web_login',
			'rnd'		:0.47730758627661407
		}
		url='http://icode.renren.com/getcode.do?%s' %urllib.urlencode(par)
		data=get(url)
		tmp = tempfile.mkstemp(suffix='.png')
		os.write(tmp[0], data)
		os.close(tmp[0])
		os.startfile(tmp[1])
		self.icode=input("输入验证码：")

	## get  necesary paraments
	def getpar(self):
		for x in cookiejar:
			if x.name=='id':
				self._id=x.value
				break
		url='http://www.renren.com/%s' % self._id
		page=urllib2.urlopen(url).read()
		html=BeautifulSoup(page)
		parli=html.find(name='script')
		s=str(parli)
		index1=s.index('nx.user')
		index2=s.index('nx.user.isvip')
		s=s[index1+10:index2-1]
		parli=s.split(',')
		self.name=parli[3][8:]
		self._tok=parli[4][17:-1]
		self._rtk=parli[5][9:-3]

		print self.name,self._tok,self._rtk
		
	def login(self):
		
		
		postdata={
			'captcha_type'				:'web_login',
			'domain'					:'renren.com',
			'email'						:self.email,
			'f'							:'http%3A%2F%2Fwww.renren.com%2F476284792',
 			'icode'						:self.icode,
			'key_id'					:1,
			'origURL'					:'http://www.renren.com/home',
			'password'					:self.pwd,
			'rkey'						:''
		}
		headers={
		'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0'
		}
		url="http://www.renren.com/ajaxLogin/login?1=1&uniqueTimestamp=2014611340911"
		
		info=json.loads(post(url,postdata,headers))
		
		if info["code"]:
			self.getpar()
			print self.name,'登录成功'
		else:
			print '登录失败'
		

	def publish(self,content):
		postdata={
			'_rtk'				:self._rtk,
			'channel'			:'renren',
			'content'			:content,
			'privacyParams'		:{"sourceControl":"99"},
			'requestToken'		:self._tok,
			'withInfo'			:'%7B%22wpath%22%3A%5B%5D%7D'
		}
		url='http://shell.renren.com/'+self._id+'/status' 
		post(url,postdata)
		print 'ok'

		
    
email= input('用户名')
password=input('密码')
rr=RenRen(email,password)
#rr.publish('下雨吧')