如图：

#!/usr/bin/env python# -*- coding: utf-8 -*-import asyncioimport datetimeimport timefrom random import randint@asyncio.coroutinedef StartState():    print("Start State called \n")    input_value = randint(0, 1)    time.sleep(1)    if (input_value == 0):        result = yield from State2(input_value)    else:        result = yield from State1(input_value)    print("Resume of the Transition: \nStart State calling " \          + result)@asyncio.coroutinedef State1(transition_value):    outputValue = str(("State 1 with transition value = %s \n" \                       %(transition_value)))    input_value = randint(0, 1)    time.sleep(1)    print("...Evaluating....")    if (input_value == 0):        result = yield from State3(input_value)    else:        result = yield from State2(input_value)    result = "State 1 calling " + result    return (outputValue + str(result))@asyncio.coroutinedef State2(transition_value):    outputValue = str(("State 2 with transition value = %s \n" \                       %(transition_value)))    input_value = randint(0, 1)    time.sleep(1)    print("...Evaluating....")    if (input_value == 0):        result = yield from State1(input_value)    else:        result = yield from State3(input_value)    result = "State 2 calling " + result    return (outputValue + str(result))@asyncio.coroutinedef State3(transition_value):    outputValue = str(("State 3 with transition value = %s \n" \                       %(transition_value)))    input_value = randint(0, 1)    time.sleep(1)    print("...Evaluating....")    if (input_value == 0):        result = yield from State1(input_value)    else:        result = yield from EndState(input_value)    result = "State 2 calling " + result    return (outputValue + str(result))@asyncio.coroutinedef EndState(transition_value):    outputValue = str(("End State with transition value = %s \n" \                       %(transition_value)))    print("...Stop Computation...")    return (outputValue)if __name__ == "__main__":    print("Finite State Machine simulation With Asyncio Coroutine")    loop = asyncio.get_event_loop()    loop.run_until_complete(StartState())