code: def uninstall_handler(self, event_type, handler, user_handle=None):
          
  
          self.visalib.uninstall_visa_handler(self.session, event_type, handler, user_handle)
docs: Uninstalls handlers for events in this resource.
  
          :param event_type: Logical event identifier.
          :param handler: Interpreted as a valid reference to a handler to be uninstalled by a client application.
          :param user_handle: The user handle (ctypes object or None) returned by install_handler.