Python101_Functions_AddSubAvg

def do_calculation():

    command = input("Enter a command to add or subtract or average:  ")
    print("Let's", command, "some numbers")

    if command == "add":
        number1 = int(input("Number 1: "))
        number2 = int(input("Number 2: "))
        result = number1 + number2
        print(number1, "+",number2, "=", result)

    elif command == "subtract":
        number1 = int(input("Number 1: "))
        number2 = int(input("Number 2: "))
        result = number1 - number2
        print(number1, "-", number2, "=" , result)

    elif command == "average":
        how_many = input("How many numbers do you want to average? ")
        how_many = int(how_many)
        total = 0
        for number_count in range(how_many):
            number = input("Enter number " + str(number_count) + " = ")
            total = total + int(number)
            result = total / how_many
        print("average is = " + str(result))

    else:
        print("This command is not recognized. Bye.")

do_calculation()