print("Hi, I am Mimi, your personal mathematics bot.")
command = input("How can I help you today? Would you like to add, subtract, multiply or divide? Or maybe I could help you find the average of several numbers? I could even help you make up your shopping list! Please choose one. >")
if command == "add":
  print("OK, let's add some numbers.")
  input1 = input("Number 1> ")
  input2 = input("Number 2> ")
  number1 = int(input1)
  number2 = int(input2)
  result = number1 + number2
  output = str(result)
  print(input1 + " + " + input2 + " = " + output)
  print("Thanks for adding numbers with me. That was fun!")
elif command == "subtract":
  print("OK, let's subtract some numbers.")
  input1 = input("Number 1> ")
  input2 = input("Number 2> ")
  number1 = int(input1)
  number2 = int(input2)
  result = number1 - number2
  output = str(result)
  print(input1 + " - " + input2 + " = " + output)
  print("That was a good workout with numbers!")
elif command == "multiply":
  print("OK, let's multiply some numbers.")
  input1 = input("Number 1> ")
  input2 = input("Number 2> ")
  number1 = int(input1)
  number2 = int(input2)
  result = number1 * number2
  output = str(result)
  print(input1 + " * " + input2 + " = " + output)
  print("That was a good workout with numbers!")
elif command == "divide":
  print("OK, let's divide some numbers.")
  input1 = input("Number 1> ")
  input2 = input("Number 2> ")
  number1 = int(input1)
  number2 = int(input2)
  result = number1 / number2
  output = str(result)
  print(input1 + " / " + input2 + " = " + output)
  print("That was a good workout with numbers!")
elif command == "average":
  how_many = input("How many numbers> ")
  how_many = int(how_many)
  total = 0
  for number_count in range(how_many):
    number = input("Enter number " + str(number_count + 1) + "> ")
    total = total + int(number)
  result = total / how_many
  print("The average comes out to " + str(result))
  print("That was fun!")
elif command == "shopping":
  print("OK, then. Time to go shopping!")
  shopping = []
  cost = 0
  how_many = input("How many items will you be needing today? ")
  how_many = int(how_many)
  for item_number in range(how_many):
    item = input("What is item number " + str(item_number + 1)+ "? ")
    shopping.append(item)
    item_price = float(input("How much is that today? Just enter the price without the dollar sign please. >"))
    cost = cost + item_price
    print(shopping)
    print("Total cost of your shopping today is $" + str(cost))


else:

  print("Sorry, I don't understand.")
print("Bye.")