Adding to a List and displaying quantity in the list

Hi
I have coded a program whihc outputs what I like, but I am trying to modify it to add specific result info to a list and then display the number of items in the list. This is easy for me with basic code, but seems difficult when trying to adapt my program.
My code and explanation is as follows:

class Source(Process):
""" Source generates customers randomly """

def generate(self, number, meanTBA, resource):
for i in range(number):
c = Customer(name="Customer%02d" % (i+1,))
activate(c, c.visit(b=resource))
#t = expovariate(1.0 / meanTBA)
t = 10.0
yield hold, self, t

class Customer(Process):
""" Customer arrives, is served and leaves """

def visit(self, b):
leavelist = [] /* Name of List defined */
arrive = now()
#tib = expovariate(1.0 / timeInBank)
tib = timeInBank
/* Console Output results start here */
print("%8.3f %s: Here I am" % (now()/60, self.name))
yield (request, self, b), (hold, self,maxWaitTime)
wait = now() - arrive
if self.acquired(b):
print("%8.3f %s: Waited %6.3f" % (now()/60, self.name, wait))
yield hold, self, tib
yield release, self, b
print("%8.3f %s: Finished" % (now()/60, self.name))
else:
print("%8.3f %s: Waited too long %6.3f" % (now()/60, self.name, wait) + " time units have passed - Customer has left")
leavelist.append(self.acquired)
print len(leavelist)

What I am looking to do is the "customers" who have "Waited too long" get added to my leavelist() as they occur.

Does this make sense?

Thank you.
.

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