mid_24_py.py

# python 3.5 version

from http.server import BaseHTTPRequestHandler, HTTPServer
from serial import Serial

ser = Serial('COM9')
 
class MyHandler(BaseHTTPRequestHandler):
    def do_POST(self):
        self.send_response(200)
        self.send_header('Content-type','text/html')
        self.end_headers()

        print(self.headers)
        data=self.rfile.read(1)
        print(data)
        ser_data = data.decode()
        print(ser_data)

        if ser_data == 'H':
          ser.write(data)
        elif ser_data == 'L':
          ser.write(data)
        return        

print('starting server...')
server_address = ('', 9999)
httpd = HTTPServer(server_address, MyHandler)
print('running server...')
httpd.serve_forever()