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""" bank04_OO: Simulate a single customer. random time in system """
from SimPy.Simulation import Simulation, Process, hold
from random import Random
## Model components ------------------------
class Customer(Process):
""" Customer arrives in the bank, looks around for
a random time and then leaves """
def visit(self, timeInBank=0):
print("%7.4f %s: Here I am" % (self.sim.now(), self.name))
t = self.sim.rv.expovariate(1.0 / timeInBank)
yield hold, self, t
print("%7.4f %s: I must leave" % (self.sim.now(), self.name))
## Experiment data -------------------------
maxTime = 100.0 # minutes
## Model -----------------------------------
class BankModel(Simulation):
def __init__(self, seed):
Simulation.__init__(self)
self.rv = Random(seed)
def run(self):
""" PEM """
c = Customer(name="Klaus", sim=self)
self.activate(c, c.visit(timeInBank=10.0), at=5.0)
self.simulate(until=maxTime)
## Experiment ------------------------------
mymodel = BankModel(seed=1133)
mymodel.run()
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