URLLIB Module of network programming

First of all, Urlib is not a very useful method, here is only a brief introduction. Generally we use the requests method instead of the Urlib method.

1. Get request

1  fromUrllibImportRequest2URL ='http://www.baidu.com'3req = Request.urlopen (URL)#open a URL to send a GET request4Content = Req.read (). Decode ()#读取Source Code5FW = Open ('baidu.html','W', encoding='Utf-8')6Fw.write (content)

Line 1th: Importing the request function from Urllib can also be written as: Import Urllib.request

Line 2nd: The URL link of the GET request, if it is in the interface test, the following parameters should be taken, for example: Http://api.xxxx.cn/api/user/stu_info?stu_name=xiaohei

Line 3rd: Open the URL, send a GET request, get to the

Line 4th: Read the source code, directly read the binary format, to be decoded

Line 5th: Create a file in "W" mode

Line 6th: Write the read source to baidu.html

2. Post request

1  fromUrllibImportRequest,parse2URL ='Http://api.xxxx.cn/api/login'3data = {4     'username':'xxxx',5     'passwd':'xxxxxxxx'6}#Request Data7data = Parse.urlencode (data)#Turn the dictionary into a string: Username=xxxx&passwd=xxxxxxx, spell the parameters8req = Request.urlopen (Url,data.encode ())#incoming parameter to byte type9 Print(Req.read (). Decode ())

Line 1th: Import request from Urllib, parse function

Line 2nd: Request address

Line 3rd: Post entry, defined data is dictionary format

Line 7th: The Parse.urlencode () method turns the dictionary into a string and is stitched into a username=xxxxx&passwd=xxxxxx format.

Line 8th: Incoming arguments to be converted to binary format

Line 9th: Print out the post results to decode.

URLLIB Module of network programming