class?Customer:
??
??def?__init__（self?id?name?telephone）:
????self.custID?=?id
????self.custName?=?name
????self.custTelephone?=?telephone
??
??def?__str__（self）:
????return?str.format（“ID:?{0}\tName:?{1}\tTelephone:?{2}“?
??????????????????????self.custID?self.custName?self.custTelephone）


class?CustomerDB:
??
??def?__init__（self）:
????self.customerDatabase?=?{}
??
??def?storeCustomer（self?customer）:
???self.customerDatabase[customer.custID]?=?customer
?
??def?getCustomer（self?id）:
????return?self.customerDatabase[id]
??
??def?__str__（self）:
????list?=?“Customers\n“
????for?id?cust?in?self.customerDatabase.iteritems（）:
??????list?+=?str.format（“{0}“?cust）?+?“\n“
????return?list

def?GetNewCustomer（id?name?telephone）:
??return?Customer（id?name?telephone）

def?GetCustomerDB（）:
??return?CustomerDB（）