groupby# openstef_core.utils.itertools.groupby(iterable: Iterable[tuple[K, V]]) → dict[K, list[V]][source]# Group items by a key function. Returns: Dictionary mapping keys to lists of associated values. Parameters: iterable (Iterable[tuple[TypeVar(K), TypeVar(V)]]) Return type: dict[TypeVar(K), list[TypeVar(V)]]
