Method _is_observable

prometheus_client/metrics.py:67–71

(self)

    _reserved_labelnames: Sequence[str] = ()

    def _is_observable(self):
        # Whether this metric is observable, i.e.
        # * a metric without label names and values, or
        # * the child of a labelled metric.
        return not self._labelnames or (self._labelnames and self._labelvalues)

    def _raise_if_not_observable(self):
        # Functions that mutate the state of the metric, for example incrementing