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python模拟进程状态

本文主要是介绍python模拟进程状态，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

 

from transitions import Machine


class Progress(object):
    pass


model = Progress()
states = ['New', 'Ready', 'Waiting', 'Running', 'Terminated']
transitions = [
    {'trigger': 'Admitted', 'source': 'New', 'dest': 'Ready'},
    {'trigger': 'Input', 'source': 'Waiting', 'dest': 'Ready'},
    {'trigger': 'Output', 'source': 'Waiting', 'dest': 'Ready'},
    {'trigger': 'event_completion', 'source': 'Waiting', 'dest': 'Ready'},
    {'trigger': 'event_wait', 'source': 'Running', 'dest': 'Waiting'},
    {'trigger': 'Input', 'source': 'Running', 'dest': 'Waiting'},
    {'trigger': 'Output', 'source': 'Running', 'dest': 'Waiting'},
    {'trigger': 'Interrupt', 'source': 'Running', 'dest': 'Ready'},
    {'trigger': 'Dispatch', 'source': 'Ready', 'dest': 'Running'},
    {'trigger': 'Exit', 'source': 'Running', 'dest': 'Terminated'}]

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

print(model.state)
model.Admitted()
print(model.state)
model.Dispatch()
print(model.state)
model.event_wait()
print(model.state)
model.Output()
print(model.state)
model.Dispatch()
print(model.state)
model.Exit()
print(model.state)

 

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