code: def get_user(self, username, macaroons):
          
          url = '{}u/{}'.format(self.url, username)
          return make_request(url, timeout=self.timeout, macaroons=macaroons)
docs: Fetch user data.
  
          Raise a ServerError if an error occurs in the request process.
  
          @param username the user's name.
          @param macaroons the encoded macaroons string.