Built python module initiates HTTP (S) requests

A, Python2

 httplib

Description: httplib implements HTTP and HTTPS client protocols, generally do not directly use in python to use its http achieve a higher level of package modules (urllib, urllib2).

httplib achieve http request

 

import httplib

host = 'www.baidu.com' # Note: the protocol can not be put

port = 80

# Get HTTPConnection objects

conn = httplib.HTTPConnection(host, port)

# Initiation request

conn.request("GET", "/")

# Get Return value

res = conn.getresponse()

print res.status # status code

print res.read () # returns the result

 

 

 

urllib、urllib2

Introduction: urllib urllib2 and accept the modules are requested URL, but can accept a urllib2 Request instance of the class to set the URL request headers, can accept only the urllib URL.

 

urllib initiate a request

Import the urllib 
baidu = urllib.urlopen ( ' http://www.baidu.com ' )
 Print baidu.read () returns the result read #
 Print baidu.geturl () # acquisition request URL 
Print baidu.getcode () Gets the state # code
 baidu.close ()

 

urllib be url encoded

import urllib
d = {
    "$count":"count",
    "$limit":"limit",
    "$offset":"offset",
    "$filter":None,
}
print urllib.urlencode(d)

结果：%24offset=offset&%24limit=limit&%24filter=None&%24count=count

 

See detailed usage

urllib learning

urllib2

import json
import urllib
import urllib2
#get response
data = json.dumps(body)
conn = urllib2.Request(url, data, header)
res = urllib2.urlopen(conn)
print res
print res.read()

 

 

Two, python3

urllib

Description: Python3There are also urlliband urllib3two libraries, which urllibis almost Python2in urlliband urllib2a set of two modules, so our most popular urllibmodules, and urllib3then as an expansion module.

urllib initiate a request

import urllib
from urllib import request
res = request.urlopen("http://www.baidu.com")
print(res.read())

 

urllib be url encoded

import urllib
from urllib import parse
d = {"a":"1","b":"2"}
parse.urlencode(d)

结果:'a=1&b=2'

See:

python3 urllib learning