python2与python3爬虫中get与post对比解析

python2中的urllib2改为python3中的urllib.request

四种方式对比：

python2的get

# coding=utf-8import urllibimport urllib2word = urllib.urlencode({"wd":"百度"})url = 'http://www.baidu.com/s' + '?' + wordrequest = urllib2.Request(url)print urllib2.urlopen(request).read().decode('utf-8')

python3的get

import urllib.requestimport urllib.parsedata = urllib.parse.urlencode({'wd':'百度'})url = 'http://wwww.baidu.com/s?' + data# url = 'http://www.baidu.com/s?wd=' + urllib.parse.quote('百度')response = urllib.request.urlopen(url)print (response.read().decode('utf-8'))

python2的post

# coding=utf-8import urllibimport urllib2formdata = {  'name':'百度'}data = urllib.urlencode(formdata)request = urllib2.Request(url = "http://httpbin.org/post", data=data)response = urllib2.urlopen(request)print response.read()

python3的post

import urllib.parseimport urllib.requestdata = bytes(urllib.parse.urlencode({'name':'百度'}),encoding='utf8')response = urllib.request.urlopen('http://httpbin.org/post',data=data)print(response.read().decode('utf-8'))

或

import urllib.parseimport urllib.requestrequest = urllib.request.Request('http://httpbin.org/post',data=bytes(urllib.parse.urlencode({'name':'百度'}),encoding='utf8))'))response = urllib.request.urlopen(request)print (response.read().decode('utf-8'))

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