(self)
return len(self._events)
How many events are in this sequence.

    Returns:
      Number of events as an integer.
How many events are in this sequence.
How many events are in this sequence .
def __len__(self):
    """How many events are in this sequence.

    Returns:
      Number of events as an integer.
    """
    return len(self._events)
def __len__ ( self ) : return len ( self . _events )