Learn Lambda Functions by Building an Expense Tracker - Step 52

### Can’t backspace input… WHY???:
I don’t understand how the input work. I type the category as “food” but I misspell it as “fp” then I backspace once and continue my “ood”. However, I get “fpood” in the category. Just curious though, I’m newbie.

Your code so far

def add_expense(expenses, amount, category):
    expenses.append({'amount': amount, 'category': category})
    
def print_expenses(expenses):
    for expense in expenses:
        print(f'Amount: {expense["amount"]}, Category: {expense["category"]}')
    
def total_expenses(expenses):
    return sum(map(lambda expense: expense['amount'], expenses))
    
def filter_expenses_by_category(expenses, category):
    return filter(lambda expense: expense['category'] == category, expenses)
    

def main():
    expenses = []
    while True:
        print('\nExpense Tracker')
        print('1. Add an expense')
        print('2. List all expenses')
        print('3. Show total expenses')
        print('4. Filter expenses by category')
        print('5. Exit')
       
        choice = input('Enter your choice: ')

        if choice == '1':
            amount = float(input('Enter amount: '))
            category = input('Enter category: ')
            add_expense(expenses, amount, category)

        elif choice == '2':
            print('\nAll Expenses:')
            print_expenses(expenses)
    
        elif choice == '3':
            print('\nTotal Expenses: ', total_expenses(expenses))
    
        elif choice == '4':
            category = input('Enter category to filter: ')
            print(f'\nExpenses for {category}:')
            expenses_from_category = filter_expenses_by_category(expenses, category)
            print_expenses(expenses_from_category)
    
        elif choice == '5':
            print('Exiting the program.')
            break


# User Editable Region

main()

# User Editable Region

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Challenge Information:

Learn Lambda Functions by Building an Expense Tracker - Step 52

That doesn’t seem the correct behavior.

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Click on the “Restart Step” button and force a refresh of your page with CTRL + F5.

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or - Ensure your browser is up-to-date or try a different browser.

I hope one of these will work for you.