HTTP 在 python 中的 localhost 上删除请求

Question

I'm trying to build client and server on localhost and implement get, post and delete http requests using requests module in python.I have this for server:

from http.server import HTTPServer, BaseHTTPRequestHandler
from urllib.parse import parse_qs

names_dict = {'john': 'smith',
              'david': 'jones',
              'michael': 'johnson',
              'chris': 'lee'}


class RequestHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        self.log_message("Incoming GET request...")
        try:
            name = parse_qs(self.path[2:])['name'][0]
        except:
            self.send_response_to_client(404, 'Incorrect parameters provided')
            self.log_message("Incorrect parameters provided")
            return

    if name in names_dict.keys():
        self.send_response_to_client(200, names_dict[name])
    else:
        self.send_response_to_client(404, 'Name not found')
        self.log_message("Name not found")

def do_POST(self):
    self.log_message('Incoming POST request...')
    data = parse_qs(self.path[2:])
    try:
        names_dict[data['name'][0]] = data['last_name'][0]
        self.send_response_to_client(200, names_dict)
    except KeyError:
        self.send_response_to_client(404, 'Incorrect parameters provided')
        self.log_message("Incorrect parameters provided")

def send_response_to_client(self, status_code, data):
    # Send OK status
    self.send_response(status_code)
    # Send headers
    self.send_header('Content-type', 'text/plain')
    self.end_headers()

    # Send the response
    self.wfile.write(str(data).encode())

server_address = ('127.0.0.1', 8080)
http_server = HTTPServer(server_address, RequestHandler)
http_server.serve_forever()

and this for client:

import requests

r = requests.get("http://127.0.0.1:8080/", params={"name":'michael'})
print("Request method: GET, \
    Response status_code: {}, Response data: {}".format(r.status_code, r.text))
r = requests.post("http://127.0.0.1:8080/", params = {'name':'peter', 'last_name':'peterson'})
print("Request method: POST, \
    Response status_code: {}, Response data: {}".format(r.status_code, r.text))
r = requests.delete("http://127.0.0.1:8080/", params={'name':'chris', 'last_name':'lee'})
print("Request method: DELETE, \
    Response status_code: {}, Response data: {}".format(r.status_code, r.text))

How can I add code in server file to delete entry from dictionary based on name and last_name and after that print new dictionary on screen like after post request.

Answer 1

I don't know if it's pure coincidence or if we're colleagues. But I also had this assignamment in the courses I take. The method to delete and give the client the list that I have implemented is:

def do_DELETE(self):
    self.log_message('Incoming DELETE request...')

    try:
        name = parse_qs(self.path[2:])['name'][0]  
    except KeyError:
        self.send_response_to_client(404, self.path[2:])
        self.log_message("Incorrect parameters provided")
        return
        
    for key, value in names_dict.items():
        if name in names_dict.keys() or names_dict.values():
        
            if key == name:
                del names_dict[key]
                self.send_response_to_client(200, f'Name found and deleted {names_dict}')
                self.log_message("Name found and deleted")
                break
            elif value == name:
                del names_dict[key]
                self.send_response_to_client(200, f'Last Name found and deleted {names_dict}')
                self.log_message("Last Name found and deleted")
                
                break
    else:
        self.send_response_to_client(404, 'Name does not exist')
        self.log_message("Name does not exist")