Method setdefault

src/py/_pyodide/_core_docs.py:1164–1168

If ``key in self``, return ``self[key]``. Otherwise sets ``self[key] = default`` and returns ``default``.

(self, key: KT, default: VT | None = None)

        raise NotImplementedError

    def setdefault(self, key: KT, default: VT | None = None) -> VT:
        """If ``key in self``, return ``self[key]``. Otherwise
        sets ``self[key] = default`` and returns ``default``.
        """
        raise NotImplementedError

    def popitem(self) -> tuple[KT, VT]:
        """Remove some arbitrary ``key, value`` pair from the map and returns the