nested_indices_where(nest: Iterable, fn: Callable, _index: Optional[List] = None, _base: bool = True) → Union[Iterable, bool]¶
Checks the leaf nodes of nested x via function fn, and returns all nest indices where the method evaluates as True.
nest (nest of any) – The nest to check the leaves of.
fn (callable) – The conditon function, returning True or False.
_index (list of tuples of indices, do not set) – The indices detected so far. None at the beginning. Used internally, do not set manually.
_base (bool, do not set) – Whether the current function call is the first function call in the recursive stack. Used internally, do not set manually.
A set of indices for the nest where the function evaluated as True.