<s> from . import Event <EOL> class UserInput ( Event ) : <EOL> user = Event . Arg ( required = True ) <EOL> line = Event . Arg ( required = True ) <EOL> class UserAttach ( Event ) : <EOL> user = Event . Arg ( required = True ) <EOL> class UserDetach ( Event ) : <EOL> user = Event . Arg ( required = True ) </s>
