I have written a python library that allows you to take a class with methods and model it as a finite state machine. Each method represents a state and python annotations are used to determine which states can be accessed from which other states. This effectively allows you to only allow for calling methods after certain other methods have been called. To read more about this library and how to use it you can find a detailed description on Github and on PyPI
This program is a p5.js sketch that lets you visually create the states for your finite state machine and then can generate a python file containing a class that implements the state machine as described.
This is currently a program that I put together for fun and it could use a little more polish. I use
confirm a bit to avoid having to
create web based or canvas based modals. I would like to clean this up in the future, but the program is nonetheless functional
You can see the example from PyPI implemented below
This also generated the following python code
@Machine(init_state='stop') class Player: def __init__(self): pass @allows_access(to_states=["start"]): def stop: pass @allows_access(to_states=["pause", "rewind", "stop"]): def start: pass @allows_access(to_states=["start", "stop", "rewind"]): def pause: pass @allows_access(to_states=["start", "stop", "pause"]): def rewind: pass