def fCZ_std_errs(self):
        """
        Get a dictionary of the standard errors of the CZ fidelities from the specs,
        keyed by targets (qubit-qubit pairs).

        :return: A dictionary of CZ fidelities, normalized to unity.
        :rtype: Dict[tuple(int, int), float]
        """
        return {tuple(es.targets): es.fCZ_std_err for es in self.edges_specs}
def fCZ_std_errs ( self ) : return { tuple ( es . targets ) : es . fCZ_std_err for es in self . edges_specs }
Get a dictionary of the standard errors of the CZ fidelities from the specs,
        keyed by targets (qubit-qubit pairs).

        :return: A dictionary of CZ fidelities, normalized to unity.
        :rtype: Dict[tuple(int, int), float]