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""" 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))
activate(c, c.visit(timeInBank=12.0))
t = expovariate(1.0 / meanTBA) # (1)
yield hold, self, t # (2)
class Customer(Process):
""" Customer arrives, looks around and leaves """
def visit(self, timeInBank=0):
print("%7.4f %s: Here I am" % (now(), self.name))
yield hold, self, timeInBank
print("%7.4f %s: I must leave" % (now(), self.name))
## Experiment data -------------------------
maxNumber = 5
maxTime = 400.0 # minutes
ARRint = 10.0 # mean arrival interval, minutes
## Model/Experiment ------------------------------
seed(99999) # (3)
initialize()
s = Source(name='Source')
activate(s, s.generate(number=maxNumber,
meanTBA=ARRint), at=0.0)
simulate(until=maxTime)
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