Python Learning Notes (18) Useful module introduction in network programming

In the previous blog we use the Python urllib module to request a website, or interface, but the Urllib module is too troublesome, pass parameters, all have to be bytes type, return data is also bytes type, but also to decode, want to directly return the results to use, Also need to use JSON, send GET request and POST request, also do not pass, use more trouble, there is a more convenient module, more convenient than urllib module, is the requests module, it is more convenient to use, need to install,pip install Requests , here is an example of the requests module

   #1   url  =  http://api.python.cn /api/user/stu_info   " data  = { " stu_name   :  "  small black   '   ' #请求数据req  = requests. get  (Url,params  =data) #发get请求print (Req.json ()) # The return data is a dictionary print (req.text) #返回数据是string, JSON string 
 
   

#2, send POST request
url = ' Http://api.python.cn/api/user/login '
data = {' username ': ' Test ', ' passwd ': ' aA123456 '}  #请求数据
req = Requests.post (url,data)  #发送post请求
Print (Req.json ())
Print (Req.text)

#3, the entry parameter is a JSON-type
Import Random
Phone=random.randint (10000000000,99999999999)
Url= ' Http://api.python.cn/api/user/add_stu '
data =  {
    "Name": "Small 1",
    "Grade": "Scorpio",
    "Phone":p Hone,
    "Sex": "Male",
    "Age": 28,
    "Addr": "No. 32nd, Beihai Road, Jiyuan, Henan Province"
  }
req = Requests.post (url,json=data)
Print (Req.json ())

# 4. Add a cookie
url = ' Http://api.python.cn/api/user/gold_add '
data = {' stu_id ': 468, ' Gold ': 10000}
DJL = {' usertest ': ' 337ca4cc825302b3a8791ac7f9dc4bc6 '}
req = Requests.post (URL,DATA,COOKIES=DJL)
Print (Req.json ())

#5, add header
url = ' Http://api.python.cn/api/user/all_stu '
Header = {
    ' Referer ': ' http://api.nnzhp.cn/'
}
req = Requests.get (Url,headers=header)
Print (Req.json ())

#6, uploading files
Url= ' Http://api.python.cn/api/file/file_upload '
data = {
    ' File ': Open (R ' C:\Users\bjniuhanyang\Desktop\ graph \6bd9026dt935575932465&690.jpg ', ' RB ')
}
req= Requests.post (Url,files=data)
Print (Req.json ())

#7, download files
url = ' Http://up.mcyt.net/?down/46779.mp3 '  #下载图片, MP3, MP4 are the same operation, find the URL of the resource to
req = requests.get (URL)
Print (req.content) #返回的是二进制模式
FW = open (' Aaa.mp3 ', ' WB ') #二进制的文件写模式是 "WB", read mode is "RB"
Fw.write (req.content)

Python Learning Notes (18) Useful module introduction in network programming