Method read_nullable_attr

mypyc/irbuild/builder.py:819–822

Read an attribute that might have an error value without raising AttributeError.

(self, obj: Value, attr: str, line: int = -1)

        assert False, "Unsupported lvalue: %r" % target

    def read_nullable_attr(self, obj: Value, attr: str, line: int = -1) -> Value:
        """Read an attribute that might have an error value without raising AttributeError."""
        assert isinstance(obj.type, RInstance) and obj.type.class_ir.is_ext_class
        return self.add(GetAttr(obj, attr, line, allow_error_value=True))

    def assign(self, target: Register | AssignmentTarget, rvalue_reg: Value, line: int) -> None:
        if isinstance(target, Register):