urllib.request.Request理解Request

import urllib.request
#可以将url先构造成一个Request对象，传进urlopen
 #Request存在的意义是便于在请求的时候传入一些信息，而urlopen则不
request = urllib.request.Request('http:
response = urllib.request.urlopen(reque
print(response.read().decode('utf-8')) 
from urllib import request,parse
url='http://www.hao123.com'
headers={'User-Agent':'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36'}
dict ={'name':'Germey'}
data=bytes(parse.urlencode(dict),encoding='utf-8')
#利用Request将headers，dict，data整合成一个对象传入urlopen
req = request.Request(url,data,headers,method='POST')
#可以用add_header方法，如果需要传入多个User-Agent，可以调用这个方法循环加入
#req.add_header('User-Agent','Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36')
response=request.urlopen(req)
print(response.read().decode('utf-8'))