""" bank06: Many Random Customers """
from SimPy.Simulation import *
from random import expovariate,seed
## Model components ------------------------
class Source(Process):
""" Source generates customers at random """
def generate(self,number,meanTBA):
for i in range(number):
c = Customer(name = "Customer%02d"%(i,),sim=self.sim)
self.sim.activate(c,c.visit(timeInBank=12.0))
t = expovariate(1.0/meanTBA)
yield hold,self,t
class Customer(Process):
""" Customer arrives, looks round and leaves """
def visit(self,timeInBank=0):
print "%7.4f %s: Here I am"%(self.sim.now(),self.name)
yield hold,self,timeInBank
print "%7.4f %s: I must leave"%(self.sim.now(),self.name)
## Experiment data -------------------------
maxNumber = 5
maxTime = 400.0 # minutes
ARRint = 10.0 # mean arrival interval, minutes
## Model -----------------------------------
class BankModel(Simulation):
def run(self):
self.initialize()
s = Source(name='Source',sim=self)
self.activate(s,s.generate(number=maxNumber,
meanTBA=ARRint),at=0.0)
self.simulate(until=maxTime)
## Experiment ------------------------------
seed(99999)
BankModel().run()
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