用urllib爬取页面

# 引入扩展
from urllib import request, error,  parse

# 定义url、请求头、请求参数
url = "http://www.baidu.com"
headers = {‘User-Agent‘: ‘Mozilla/5.0 3578.98 Safari/537.36‘}
data = {‘wd‘: ‘python‘}

#请求
data = parse.urlencode(data).encode(‘utf-8‘)
url = request.Request(url, headers=headers, data=data)
print(request.urlopen(url).read().decode(‘utf-8‘))