diff options
Diffstat (limited to 'sleekxmpp/thirdparty/statemachine.py')
| -rw-r--r-- | sleekxmpp/thirdparty/statemachine.py | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/sleekxmpp/thirdparty/statemachine.py b/sleekxmpp/thirdparty/statemachine.py index 4b5ecd6b..6c504dce 100644 --- a/sleekxmpp/thirdparty/statemachine.py +++ b/sleekxmpp/thirdparty/statemachine.py @@ -15,7 +15,8 @@ log = logging.getLogger(__name__) class StateMachine(object): - def __init__(self, states=[]): + def __init__(self, states=None): + if not states: states = [] self.lock = threading.Condition() self.__states = [] self.addStates(states) @@ -33,7 +34,7 @@ class StateMachine(object): self.lock.release() - def transition(self, from_state, to_state, wait=0.0, func=None, args=[], kwargs={}): + def transition(self, from_state, to_state, wait=0.0, func=None, args=None, kwargs=None): ''' Transition from the given `from_state` to the given `to_state`. This method will return `True` if the state machine is now in `to_state`. It @@ -64,15 +65,23 @@ class StateMachine(object): values for `args` and `kwargs` are provided, they are expanded and passed like so: `func( *args, **kwargs )`. ''' + if not args: + args = [] + if not kwargs: + kwargs = {} return self.transition_any((from_state,), to_state, wait=wait, func=func, args=args, kwargs=kwargs) - def transition_any(self, from_states, to_state, wait=0.0, func=None, args=[], kwargs={}): + def transition_any(self, from_states, to_state, wait=0.0, func=None, args=None, kwargs=None): ''' Transition from any of the given `from_states` to the given `to_state`. ''' + if not args: + args = [] + if not kwargs: + kwargs = {} if not isinstance(from_states, (tuple, list, set)): raise ValueError("from_states should be a list, tuple, or set") |