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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 _validate_user_inputs(self, attributes=None, event_tags=None):
 """ Helper method to validate user inputs. Args: attributes: Dict representing user attributes. event_tags: Dict representing metadata associated with an event. Returns: Boolean True if inputs are valid. False otherwise. """


    if attributes and not validator.are_attributes_valid(attributes):
      self.logger.error('Provided attributes are in an invalid format.')
      self.error_handler.handle_error(exceptions.InvalidAttributeException(enums.Errors.INVALID_ATTRIBUTE_FORMAT))
      return False

    if event_tags and not validator.are_event_tags_valid(event_tags):
      self.logger.error('Provided event tags are in an invalid format.')
      self.error_handler.handle_error(exceptions.InvalidEventTagException(enums.Errors.INVALID_EVENT_TAG_FORMAT))
      return False

    return True