menuCalculator.py

item = ['burger','fries','pizza'] ## price for burger : 40 , fries : 20 , pizza : 50
price_customer_order = []
customer_order = []
place_order = input("place order") 
## now assuming the customer ordered say : 12 say burger and fries
for i in place_order :
  if i == "1" :
    customer_order.append(item[0])
    price_customer_order.append(40)
  elif i == "2" :
    customer_order.append(item[1])
    price_customer_order.append(20)
  elif i == "3" :
    customer_order.append(item[2])
    price_customer_order.append(50)
  else :
    pass
print("your order : " + str(list(customer_order)) + "\n your total : " + str(list(price_customer_order)))