simpy_tutorial.py

# -*- coding: utf-8 -*-
import simpy

class Car(object):
     def __init__(self, env):
         self.env = env
         # Start the run process everytime an instance is created.
         self.action = env.process(self.run())

     def run(self):
         while True:
             print('Start parking and charging at %d' % self.env.now)
             charge_duration = 5
             # We yield the process that process() returns
             # to wait for it to finish
             try:
                 yield self.env.process(self.charge(charge_duration))
             except simpy.Interrupt:
                 print('Was interrupted, hope battery is full...')
             # The charge process has finished and
             # we can start driving again.
             trip_duration = 2
             yield self.env.timeout(trip_duration)

     def charge(self, duration):
        yield self.env.timeout(duration)
        
def driver(env, car):
    yield env.timeout(3)
    car.action.interrupt()

env = simpy.Environment()
car = Car(env)
env.process(driver(env,car))
env.run(until=20)