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-8
importurllib
importurllib2
word=urllib.urlencode({"wd":"百度"})
url='http://www.baidu.com/s'+'?'+word
request=urllib2.Request(url)
printurllib2.urlopen(request).read().decode('utf-8')
python3的get
importurllib.request
importurllib.parse
data=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-8
importurllib
importurllib2
formdata={
'name':'百度'
}
data=urllib.urlencode(formdata)
request=urllib2.Request(url="http://httpbin.org/post",data=data)
response=urllib2.urlopen(request)
printresponse.read()
python3的post
importurllib.parse
importurllib.request
data=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
importurllib.parse
importurllib.request
request=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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