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  • python模拟进程状态


    `from transitions import Machine

    定义一个自己的类

    class Matter(object):
    pass
    model = Matter()

    状态定义

    states=['New', 'Ready', 'Waiting', 'Running', 'Terminated']

    定义状态转移

    transitions = [
    {'trigger': 'Admitted', 'source': 'New', 'dest': 'Ready' },
    {'trigger': 'Dispatch', 'source': 'Ready', 'dest': 'Running'},
    {'trigger': 'Interrupt', 'source': 'Running', 'dest': 'Ready'},
    {'trigger': 'InputOutputoreventwait', 'source': 'Running', 'dest': 'Waiting'},
    {'trigger': 'InputOutputoreventcompletion', 'source': 'Waiting', 'dest': 'Ready'},
    {'trigger': 'Exit', 'source': 'Running', 'dest': 'Terminated'}]

    初始化

    machine = Machine(model=model, states=states, transitions=transitions, initial='New')

    Test

    print(model.state) #New

    状体转变

    model.Admitted()
    print(model.state) #Ready

    model.Dispatch()
    print(model.state) #Running

    model.InputOutputoreventwait()
    print(model.state) #Waiting

    model.InputOutputoreventcompletion()
    print(model.state) #Ready

    model.Dispatch()
    print(model.state) #Running

    model.Interrupt()
    print(model.state) #Ready

    model.Dispatch()
    print(model.state) #Running

    model.Exit()
    print(model.state) #Terminated`

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  • 原文地址:https://www.cnblogs.com/1482156703optimus/p/14126936.html
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