I have a method that takes a collection which I need to iterate and call “len”. In practice, I pass both List and Set to it. My method looks like:

def my_method(events: Any):
    if len(events) > TOO_BIG_TO_ITERATE:
        # Some code...
    else:
        for event in events:
              # More code

What can I use instead of Any to correctly anotate that variable? Of course I cannot use List[Event] nor Set[Event] (as I want to use both). Sized does not allow iteration and Iterable does not allow len().

Is there anything better than Union[Set[Event], List[Event]]?