code: def handle(self, environ, start_response):
          "Main entry point"
          # Pass off to the router
          try:
              handler = self.route(
                  environ['PATH_INFO'].lower(),
                  environ['REQUEST_METHOD'].lower(),
              )
              if handler is None:
                  raise HttpNotFound()
          # Handle errors
          except HttpNotFound:
              start_response('404 Not Found', [('Content-Type', 'application/json')])
              return [json.dumps({"error": "not_found"})]
          except HttpMethodNotAllowed:
              start_response('405 Method Not Allowed', [('Content-Type', 'application/json')])
              return [json.dumps({"error": "method_not_allowed"})]
          # Dispatch to the named method
          body = environ['wsgi.input'].read()
          if body:
              body = json.loads(body)
          response = handler(
              environ['PATH_INFO'].lower(),
              body,
          )
          # Send the response
          start_response('200 OK', [('Content-Type', 'application/json')])
          return [json.dumps(response)f handle(self, environ, start_response):
          "Main entry point"
          # Pass off to the router
          try:
              handler = self.route(
                  environ['PATH_INFO'].lower(),
                  environ['REQUEST_METHOD'].lower(),
              )
              if handler is None:
                  raise HttpNotFound()
          # Handle errors
          except HttpNotFound:
              start_response('404 Not Found', [('Content-Type', 'application/json')])
              return [json.dumps({"error": "not_found"})]
          except HttpMethodNotAllowed:
              start_response('405 Method Not Allowed', [('Content-Type', 'application/json')])
              return [json.dumps({"error": "method_not_allowed"})]
          # Dispatch to the named method
          body = environ['wsgi.input'].read()
          if body:
              body = json.loads(body)
          response = handler(
              environ['PATH_INFO'].lower(),
              body,
          )
          # Send the response
          start_response('200 OK', [('Content-Type', 'application/json')])
          return [json.dumps(response)]
docs: Main entry point