code: def construct_request(model_type, client_name, client_pass, command, values):
      
      base_request = ("{model_type}?"
                      "clnt={client_name}|{client_pass}&"
                      "com={command}&{values}".format(model_type=model_type,
                                                      client_name=client_name,
                                                      client_pass=client_pass,
                                                      command=command,
                                                      values=values))
      return base_request
docs: Construct the request url.
  
      Inputs: - model_type: PServer usage mode type.
              - client_name: The PServer client name.
              - client_pass: The PServer client's password.
              - command: A PServer command.
              - values: PServer command arguments.
  
      Output: - base_request: The base request string.