diff options
| -rw-r--r-- | ryu/base/app_manager.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ryu/base/app_manager.py b/ryu/base/app_manager.py index bdba1ec6..971918cc 100644 --- a/ryu/base/app_manager.py +++ b/ryu/base/app_manager.py @@ -169,6 +169,8 @@ class RyuApp(object): def unregister_handler(self, ev_cls, handler): assert callable(handler) self.event_handlers[ev_cls].remove(handler) + if not event_handlers[ev_cls]: + del event_handlers[ev_cls] def register_observer(self, ev_cls, name, states=None): states = states or set() |