is_valid_NRIC = False

while not is_valid_NRIC:

# asks for input of NRIC number

ask_NRIC = str(input("Please input NRIC: "))

#if NRIC is already in system will ask again

if ask_NRIC in set_of_NRIC:

print("the NRIC is already in our system use a new one")

#if NRIC is not set then generate new account

elif ask_NRIC not in set_of_NRIC:

is_valid_NRIC = True

nric = ask_NRIC

is_valid_balance = False

while not is_valid_balance:

# asks for input of balance

ask_balance = str(input(pop_up_text))

#if ask_balance is a number with no decimal

if ask_balance.isnumeric():

is_valid_balance = True

return float(ask_balance)

#if ask_balance is a string with 1 decimal point hence can be a float

elif ask_balance.count(".")==1 and ask_balance.replace(".","").isnumeric():

is_valid_balance = True

return float(ask_balance)

else:

print("Choice number 1 is selected by the customer\n")

# creates new accounts with the attributes limit to 9 accounts to keep project small

if len(set_of_accounts) < 10:

nric = check_NRIC_not_repeated()

name = str(input("Input Fullname : "))

pin = str(input("Please input a pin of your choice : "))

balance = check_balance_valid("Please input a amount to deposit to start an account: ")

#create Account object and add the set_of_accounts

account = Account(nric, name, pin, balance)

set_of_accounts.add(account)

print("\n----New account created successfully !----")

print("Note! Please remember the Name and Pin")

print("========================================")

else:

print("\nCustomer registration exceed reached the no:of spaces left are: " + str((len(set_of_accounts)) - 10))

# This statement below helps the user to go back to the start of the program (main menu).

print("Choice number 2 is selected by the customer\n")

available = False

nric = input("Please input nric : ")

pin = input("Please input pin : ")

# This while loop will prevent the user using the account if the username or pin is wrong.

for account in set_of_accounts:

if account.get_nric() == nric and account.get_pin() == pin:

available = True

# These few statement would show the balance taken from the list.

print("Your Current Balance: " + str(account.get_balance()) + "-/Dollars\n")

balance = (account.get_balance())

# Statement below would take the amount to withdraw from user.

withdrawal = check_balance_valid("Input amount to Withdraw : ")

# The if condition below would look whether the withdraw is greater than the balance.

if withdrawal > balance:

# Please deposit more before withdrawing more money.

print("Please Deposit more money because your Balance is not enough for such a large withdrawal : ")

break

else:

# Else condition mentioned above is to do withdrawal if the balance is greater than the

# withdraw amount.

balance = balance - withdrawal

# These few statement would update the values in the list and show it to the customer.

print("\n----Withdraw Successful!----")

account.set_balance(balance)

print("Your New Balance: " + str(balance) + " -/Dollars\n\n")

if not available:

# The if condition above would work when the pin or the name is wrong.

print("Your name and pin does not match!\n")

# This statement below helps the user to go back to the start of the program (main menu).

print("Choice number 3 is selected by the customer\n")

available = False

nric = input("Please input nric : ")

pin = input("Please input pin : ")

# The while loop below would work when the pin or the username is wrong.

for account in set_of_accounts:

if account.get_nric() == nric and account.get_pin() == pin:

available = True

# These statements below would show the customer balance and update list values according to

# the deposition made.

print("Your Current Balance: " + str(account.get_balance()) + " -/Dollar")

balance = account.get_balance()

# This statement below takes the deposition from the customer.

deposition = check_balance_valid("Enter the value you want to deposit : ")

balance = balance + deposition

account.set_balance(balance)

print("\n----Deposition successful!----")

print("Your New Balance: " + str(balance) + " -/Dollar\n\n")

if not available:

print("Your name and pin does not match!\n")

# This statement below helps the user to go back to the start of the program (main menu).

print("Choice number 4 is selected by the customer\n")

#password so that only bank employee can view all customers

password = input("Please input bank password to view all customers: ")

if password == "password":

print("\nCustomer name list and balances mentioned below: \n")

#convert accounts from set to list so that delete them based on the list index and sort them based on name

list_of_accounts = list(set_of_accounts)

list_of_accounts.sort(key=lambda x: x._name)

if len(set_of_accounts) > 0:

# The while loop below will keeping running until all the customers and balances are shown.

for index, account in enumerate(list_of_accounts):

print(str(index+1) + "->. NRIC = " + str(account.get_nric()))

print("---->. Customer = " + str(account.get_name()))

print("---->. Balance = " + str(account.get_balance()) + " -/Dollars\n")

# if there is no accounts

elif len(set_of_accounts)==0:

print("no customers in database")

# This statement below helps the user to go back to the start of the program (main menu).

input("Please press enter key to go back to main menu to perform another function or exit ...")

else:

print("password incorrect user not allowed to see customer list")

#initialize as false first for the while loop to keep asking for a valid number

is_valid_num = False

correct_range = [str(x) for x in range(1,num_customer+1)]

#if in delete choice is within the correct range then serial number will be accepted

while not is_valid_num:

delete_choice = (input("Please choose the serial no. of the account you want deleted: "))

if delete_choice in correct_range:

is_valid_num = True

return int(delete_choice)

else:

print("Choice number 5 is selected by the customer\n")

#password so that only bank employee can delete customers

password = input("Please input bank password to delete customers: ")

if password == "password":

print("\nCustomer name list and balances mentioned below: \n")

#convert accounts from set to list so that delete them based on the list index and sort them based on name

list_of_accounts = list(set_of_accounts)

list_of_accounts.sort(key=lambda x: x._name)

if len(set_of_accounts) > 0:

# The while loop below will keeping running until all the customers and balances are shown.

for index, account in enumerate(list_of_accounts):

print(str(index+1) + "->. NRIC = " + str(account.get_nric()))

print("---->. Customer = " + str(account.get_name()))

print("---->. Balance = " + str(account.get_balance()) + " -/Dollars\n")

#choose the serial number you want to delete

delete_index = choose_valid_del_num(len(list_of_accounts))

del(list_of_accounts[delete_index-1])

#recreate the set for accounts and nric

new_set_of_accounts = set()

new_set_of_NRIC = set()

for account in list_of_accounts:

new_set_of_accounts.add(account)

new_set_of_NRIC.add(account.get_nric())

print("\nCustomer Serial No." + str(delete_index) + " successfully deleted \n")

return new_set_of_accounts, new_set_of_NRIC

#if no accounts

elif len(set_of_accounts)==0:

print("no customers to delete")

input("Please press enter key to go back to main menu to perform another function or exit ...")

else:

print("password incorrect user not allowed to see customer list")

# These statements would be just showed to the customer.

print("Choice number 6 is selected by the customer")

print("Thank you for using our banking system!\n")

print("Come again")

print("Bye bye")

if len(set_of_accounts) > 0:

# Loop to out class variables into text file for future use

with open("Acc.txt", 'w') as f:

for account in set_of_accounts:

jsonstr = json.dumps(account.__dict__)

f.write(jsonstr)

f.write("\n")

print("Invalid option selected by the customer")

print("Please Try again!\n")

# This statement below helps the user to go back to the start of the program (main menu).