python 怎么获取网页内容

page = urllib2.urlopen(url)   contents = page.read()   #获得了整个网页的内容也就是源代码  print(contents)

#coding:utf-8  ''''' @author: jsjxy '''  import urllib2   import re   from bs4 import BeautifulSoup  from distutils.filelist import findall  page = urllib2.urlopen('http://movie.douban.com/top250?format=text')   contents = page.read()    #print(contents)  soup = BeautifulSoup(contents,"html.parser")  print("豆瓣电影TOP250" + "" +" 影片名              评分       评价人数     链接 ")    for tag in soup.find_all('div', class_='info'):       # print tag      m_name = tag.find('span', class_='title').get_text()            m_rating_score = float(tag.find('span',class_='rating_num').get_text())              m_people = tag.find('div',class_="star")      m_span = m_people.findAll('span')      m_peoplecount = m_span[3].contents[0]      m_url=tag.find('a').get('href')      print( m_name+"        "  +  str(m_rating_score)   + "           " + m_peoplecount + "    " + m_url )