Method copy

mypy/partially_defined.py:186–189

(self)

        self.undefined_refs: dict[str, set[NameExpr]] = {}

    def copy(self) -> Scope:
        result = Scope([s.copy() for s in self.branch_stmts], self.scope_type)
        result.undefined_refs = self.undefined_refs.copy()
        return result

    def record_undefined_ref(self, o: NameExpr) -> None:
        if o.name not in self.undefined_refs: