Method items

mypy/checker.py:9374–9387

Returns all disjoint mappings in key-value pairs.

(self)

            root_values.update(self._root_id_to_values.pop(subtree_root))

    def items(self) -> list[tuple[set[TKey], set[TValue]]]:
        """Returns all disjoint mappings in key-value pairs."""
        root_id_to_keys: dict[int, set[TKey]] = {}
        for key in self._key_to_id:
            root_id = self._lookup_root_id(key)
            if root_id not in root_id_to_keys:
                root_id_to_keys[root_id] = set()
            root_id_to_keys[root_id].add(key)

        output = []
        for root_id, keys in root_id_to_keys.items():
            output.append((keys, self._root_id_to_values[root_id]))

        return output

    def _lookup_or_make_root_id(self, key: TKey) -> int:
        if key in self._key_to_id: