curriculum/challenges/english/blocks/learn-lambda-functions-by-building-an-expense-tracker/65826af5b226a5628aa154b1.md
Finally, call your main() function, and try the expense tracker program in the console.
With that, the expense tracker project is complete!
You should call your main() function.
assert.match(code, /^main\s*\(\s*\)/m)
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
--fcc-editable-region--
--fcc-editable-region--
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
main()