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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_request(self, request):
 """ Try to authenticate the user based on any given tokens that have been provided to the request object. This will try to detect the authentication type and assign the detected User object to the `request.user` variable, similar to the standard Django authentication. """


        request.auth_type = None
        
        http_authorization = request.META.get("HTTP_AUTHORIZATION", None)
        
        if not http_authorization:
            return
        
        auth = http_authorization.split()
        
        self.auth_type = auth[0].lower()
        self.auth_value = " ".join(auth[1:]).strip()
        
        request.auth_type = self.auth_type
        
        self.validate_auth_type()
        
        if not self.handler_name:
            raise Exception("There is no handler defined for this authentication type.")
        
        self.load_handler()
        
        response = self.handler.validate(self.auth_value, request)
        
        if response is not None:
            return response
        
        request.access_token = self.handler.access_token(self.auth_value, request)
        request.user = self.handler.authenticate(self.auth_value, request)