Method verify_base_classes

mypy/semanal.py:2806–2814

(self, defn: ClassDef)

        defn.metaclass = metas.pop()

    def verify_base_classes(self, defn: ClassDef) -> bool:
        info = defn.info
        cycle = False
        for base in info.bases:
            baseinfo = base.type
            if self.is_base_class(info, baseinfo):
                self.fail("Cycle in inheritance hierarchy", defn)
                cycle = True
        return not cycle

    def verify_duplicate_base_classes(self, defn: ClassDef) -> bool:
        dup = find_duplicate(defn.info.direct_base_classes())