The meaning and simple sample code of the member variable path of the class BaseHTTPRequestHandler in the Python library http.server

The following is a simple sample code that demonstrates how to use BaseHTTPRequestHandler to handle HTTP requests and print the request path:

from http.server import BaseHTTPRequestHandler, HTTPServer

class MyRequestHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        # 打印请求路径
        print(self.path)
        
        # 发送响应
        self.send_response(200)
        self.end_headers()
        self.wfile.write(b'Hello, World!')

if __name__ == '__main__':
    # 创建 HTTP 服务器，并指定请求处理器
    server = HTTPServer(('localhost', 8000), MyRequestHandler)
    print('Starting server, listening on http://localhost:8000')
    # 启动服务器
    server.serve_forever()

In the above example:
we defined a subclass named MyRequestHandler, which inherited BaseHTTPRequestHandler.
We override the do_GET() method to handle HTTP GET requests. In this method, we print the requested path using self.path and send a simple response.
Finally, we create an HTTP server and set the request handler to MyRequestHandler. Start the server by calling the serve_forever() method so that it can handle incoming HTTP requests.

After running the above code, the console output is as follows:

When we enter the following path in the browser:

http://localhost:8000/suwenhao15

Immediately get the following results:


When we enter the following path in the browser:

http://localhost:8000/search?q=python

and get the following result:

But if the input URL path is relatively long, the response is very slow, and it takes a few minutes to get the result. I don’t know what’s going on, such as the following:

http://localhost:8000/search?q=python+programming

Regardless of the above problem, through experiments, we can find out what is stored in the member variable path of the class BaseHTTPRequestHandler in the library http.server: that is, the string after the host in a URL path, including the character "/".