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import pickle
import random
DATA_FILE = "CustomerData.DAT"
class CustomerRecord:
def __str__(self) -> str:
return f"{self.CustomerID}"
def __init__(self):
self.CustomerID = random.randint(100001, 1000000)
self.CustomerName = ""
self.TelephoneNumber = ""
self.OrderValueTotal = 0
customers = [CustomerRecord() for i in range(0, 1000)]
def Hash(CustomerID: int) -> int:
return CustomerID % 1000
CustomerData = [None for i in range(0, 1000)]
def AddRecord(Customer: CustomerRecord):
offset = 0
while CustomerData[Hash(Customer.CustomerID) + offset] != None:
offset += 1
CustomerData[Hash(Customer.CustomerID) + offset] = Customer
def FindRecord(customer_id: int) -> CustomerRecord:
starting = Hash(customer_id)
offset = 0
while CustomerData[starting + offset].CustomerID != customer_id:
offset += 1
return CustomerData[starting + offset]
def StoreRecords(filename = DATA_FILE):
with open(filename, 'wb') as file:
for customer in CustomerData:
pickle.dump(customer, file)
file.close()
for i in range(20):
AddRecord(CustomerRecord())
for i in range(len(CustomerData)):
if CustomerData[i] != None:
print(f"[{i}] {CustomerData[i]} {'-> Collision!' if Hash(CustomerData[i].CustomerID) != i else ''}")
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