Python HTTP server

listen.py

#!/usr/bin/env python3

# This script creates an HTTP server at http://localhost:8080 and serves files
# based on the request path and query string.

# If you don't need to parse the query string, then you can create an HTTP
# server that serves files relative to the current directory with:
#
#   $ python3 -m http.server

# TODO:
#   * build response dynamically

from http.server import BaseHTTPRequestHandler, HTTPServer
import os, re, time
from urllib.parse import urlparse, parse_qs

DELAY = 1
PORT_NUMBER = 8080

class MyHandler(BaseHTTPRequestHandler):

    def do_GET(self):
        time.sleep(DELAY)

        #print(self.client_address) #('127.0.0.1', 51956)
        #print(self.requestline)    #GET /api/resource/123?foo=bar HTTP/1.1
        #print(self.path)           #/api/resource/123?foo=bar
        #print(self.headers)        #Host: localhost:8080\nUser-Agent: Mozilla/5.0...

        #parsed_url = urlparse(self.path)
        #print(parsed_url)  #ParseResult(
                            #    scheme='',
                            #    netloc='',
                            #    path='/api/resource/123',
                            #    params='',
                            #    query='foo=bar',
                            #    fragment=''
                            #)

        #parsed_query = parse_qs(parsed_url.query)
        #print(parsed_query)    #{'foo': ['bar']}

        #match = re.match("/api/resource/(\w+).*", self.path)
        #print(match.groups())  #('123',)
        #print(match.group())   #'/api/resource/123?foo=bar'
        #print(match.group(1))  #'123'

        file_path = os.path.join(os.getcwd(), os.path.dirname(__file__))

        for segment in self.path.split('/'):
            file_path = os.path.join(file_path, segment)

        if (not os.path.isfile(file_path)):
            self.send_error(404)
            return

        self.send_response(200)
        self.send_header('Content-Type', 'application/json')
        self.end_headers()

        with open(file_path, 'rb') as file:
            self.wfile.write(file.read())

try:
    server = HTTPServer(('', PORT_NUMBER), MyHandler)
    print(f'Listening on port {PORT_NUMBER}')
    server.serve_forever()

except KeyboardInterrupt:
    server.socket.close()