Python Exercise 16 – Compute Net Amount Bank Account Transaction

Python Exercise 16 Problem:

In this Python exercise, write a Python program computes the amount of a banking account transaction based on a transaction from the user input selection. The user input whether the transaction is a deposit or withdraw. Obviously this is not a real bank transaction so this exercise is to keep it simple by just creating transaction types of deposit and withdraw.

Exercise Requirements:

• Prompt user for numerical input of 1 for deposit and 2 for withdraw.
• Print the deposit amount.
• Print a random Transaction number.

Solution Python Exercise 16

Python Code Input:

import random

amount = 100
loggedOn = True

while loggedOn:
    selection = int(input("Select 1 for Deposit, 2 for Withdraw or 3 for Exit: "))
    if not selection:
        break
    if selection == 1:
        deposit = float(input("How much will you deposit? "))
        amount += deposit
        print(f"Deposit in the amount of ${format(deposit, '.2f')} ")
        print(f"Bank account balance ${format(amount, '.2f')} ")
    elif selection == 2:
        withdraw = float(input("How much will you withdraw? "))
        amount -= withdraw
        print(f"Withdraw in the amount of ${format(withdraw, '.2f')} ")
        print(f"Bank account balance ${format(amount, '.2f')} ")
    else:
        loggedOn = False

print("Transaction number: ", random.randint(10000, 1000000))

User Input for Deposit:

Select 1 for Deposit, 2 for Withdraw or 3 for Exit: 1

How much will you deposit? 6

Output for Deposit:

Deposit in the amount of $6.00 
Bank account balance $106.00

User Input for Withdraw:

Select 1 for Deposit, 2 for Withdraw or 3 for Exit: 2

How much will you withdraw?  80

Output for Withdraw:

Withdraw in the amount of $80.00 
Bank account balance $26.00

User Input for Exit with Transaction Number:

Select 1 for Deposit, 2 for Withdraw or 3 for Exit: 3

Output for Exit with Transaction Number:

Transaction number:  126757

As you can see with the withdraw transaction, if you were to withdraw anything over 100, it would show a negative balance. If you wanted to build a better program with logic to prevent a user from withdrawing anything over the amount, the below is possible way to do it.

Additional Solution Python Exercise 16

The below solution prevents a user from over drawing their account when trying to perform a withdraw transaction.

import random

amount = 100
loggedOn = True

while loggedOn:
    selection = int(input("\nSelect 1 for Deposit, 2 for Withdraw or 3 for Exit: "))
    if not selection:
        break
    if selection == 1:
        deposit = float(input("\nHow much will you deposit? "))
        amount += deposit
        print(f"\nDeposit in the amount of ${format(deposit, '.2f')} ")
        print(f"Bank account balance ${format(amount, '.2f')} ")
    elif selection == 2:
        withdraw = float(input("\nHow much will you withdraw? "))
        if amount >= withdraw:
            amount -= withdraw
            print(f"\nWithdraw in the amount of ${format(withdraw, '.2f')} ")
            print(f"Bank account balance ${format(amount, '.2f')} ")
        else:
            print("\nThis transaction can not be processed.")
            print("Withdraw amount is greater than bank account amount. ")
    else:
        loggedOn = False

print("\nTransaction number: ", random.randint(10000, 1000000))

User Input for Withdraw:

Select 1 for Deposit, 2 for Withdraw or 3 for Exit: 2

How much will you withdraw? 300

Output for Withdraw:

This transaction can not be processed.
Withdraw amount is greater than bank account amount.