States lost when Subclassing a statemachine class with states

[joshuacc1]

• Python State Machine version:
• Python version:
• Operating System:

Description

Describe what you were trying to get done.
Tell us what happened, what went wrong, and what you expected to happen.

Say we have a statemachine class and we subclass it:

class TrafficLightMachine(StateMachine):
    def __init__(self):
        StateMachine.__init__(self)

    green = State('green', initial=True)
    yellow = State('yellow')
    red = State('red')

    slowdown = green.to(yellow)
    stop = yellow.to(red)
    go = red.to(green)

class ExtTrafficLightMachine(TrafficLightMachine):
    def __init__(self):
        TrafficLightMachine.__init__(self)

tlm = ExtTrafficLightMachine()

The code above would result in an error:
"statemachine.exceptions.InvalidDefinition: There are no states". Now the attributes in ExtTrafficLightMachine contain the three states and transitions, but some how the subclass initialization fails to varify it.

What I Did

Workaround:

class ExtTrafficLightMachine():
    def __init__(self):
        self.statemachine = TrafficLightMachine()

    def __getattr__(self,item):
        return getattr(self.statemachine,item) #I know this doesn't capture any attributes in the ExtTrafficLightMachine class and needs flow control, but this should be good enough to point out the issue.

Paste the command(s) you ran and the output.
If there was a crash, please include the traceback here.

[fgmacedo]

@joshuacc1 Thanks for your report and sorry for the late reply. This was fixed on #253.