Consider using enums

[davidkpiano]

https://docs.python.org/3/library/enum.html

[NixBiks]

For the state and transition types?

import enum


class StateType(enum.Enum):
    compound = "compound"
    history = "history"
    atomic = "atomic"
    final = "final"


class TransitionType(enum.Enum):
    internal = 0
    external = 1

[davidkpiano]

For the state and transition types?

Yes (sorry, should have been more clear!)