state machine
| class Order: | |
| pass | |
| states = ['placed', 'dispatched', 'delivered', 'canceled', 'returned'] | |
| transitions = [ | |
| # placed | |
| ['dispatch', 'placed', 'dispatched'], | |
| ['cancel', 'placed', 'canceled'], | |
| # dispatched | |
| ['deliver', 'dispatched', 'delivered'], | |
| ['cancel', 'dispatched', 'canceled'], | |
| # Returned | |
| ['return', 'delivered', 'returned'] | |
| ] | |
| from transitions import Machine | |
| machine = Machine(model=Order(), states=states, transitions=transitions, initial='placed', ignore_invalid_triggers=True) | |
| print(machine.model.state) | |
| #'placed' |
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