def stats(self) -> ba.Stats:
"""The stats instance accessible while the activity is running.
If access is attempted before or after, raises a ba.NotFoundError.
"""
if self._stats is None:
from ba._error import NotFoundError
raise NotFoundError()
return self._stats
def lobby(self) -> ba.Lobby:
"""The chooser's ba.Lobby."""
lobby = self._lobby()
if lobby is None:
raise NotFoundError('Lobby does not exist.')
return lobby