atm machine in python code example

Example: atm python program

# ATM Processes
   while True:
 
       # Reading id from user
       id = int(input("\nEnter account pin: "))
 
       # Loop till id is valid
       while id < 1000 or id > 9999:
           id = int(input("\nInvalid Id.. Re-enter: "))
 
       # Iterating over account session
       while True:
 
           # Printing menu
           print("\n1 - View Balance \t 2 - Withdraw \t 3 - Deposit \t 4 - Exit ")
 
           # Reading selection
           selection = int(input("\nEnter your selection: "))
 
           # Getting account object
           for acc in accounts:
               # Comparing account id
               if acc.getId() == id:
                   accountObj = acc
                   break
 
           # View Balance
           if selection == 1:
               # Printing balance
               print(accountObj.getBalance())
 
           # Withdraw
           elif selection == 2:
               # Reading amount
               amt = float(input("\nEnter amount to withdraw: "))
               ver_withdraw = input("Is this the correct amount, Yes or No ? " + str(amt) + " ")
 
               if ver_withdraw == "Yes":
                   print("Verify withdraw")
               else:
                   break
 
               if amt < accountObj.getBalance():
                  # Calling withdraw method
                  accountObj.withdraw(amt)
                  # Printing updated balance
                  print("\nUpdated Balance: " + str(accountObj.getBalance()) + " n")
               else:
                    print("\nYou're balance is less than withdrawl amount: " + str(accountObj.getBalance()) + " n")
                    print("\nPlease make a deposit.");
 
           # Deposit
           elif selection == 3:
               # Reading amount
               amt = float(input("\nEnter amount to deposit: "))
               ver_deposit = input("Is this the correct amount, Yes, or No ? " + str(amt) + " ")
 
               if ver_deposit == "Yes":
                  # Calling deposit method
                  accountObj.deposit(amt);
                  # Printing updated balance
                  print("\nUpdated Balance: " + str(accountObj.getBalance()) + " n")
               else:
                   break
 
           elif selection == 4:
               print("nTransaction is now complete.")
               print("Transaction number: ", random.randint(10000, 1000000))
               print("Current Interest Rate: ", accountObj.annualInterestRate)
               print("Monthly Interest Rate: ", accountObj.annualInterestRate / 12)
               print("Thanks for choosing us as your bank")
               exit()
 
           # Any other choice
           else:
               print("nThat's an invalid choice.")
 
# Main function
main()