Method _is_subnet_of

Lib/ipaddress.py:1028–1037

(a, b)

    @staticmethod
    def _is_subnet_of(a, b):
        try:
            # Always false if one is v4 and the other is v6.
            if a.version != b.version:
                raise TypeError(f"{a} and {b} are not of the same version")
            return (b.network_address <= a.network_address and
                    b.broadcast_address >= a.broadcast_address)
        except AttributeError:
            raise TypeError(f"Unable to test subnet containment "
                            f"between {a} and {b}")

    def subnet_of(self, other):
        """Return True if this network is a subnet of other."""