functions

# made a function so I don't have to keep typing the code for getting the numbers
def get_numbers():
    #defined the variable as global so it works in other parts of the program
    global number1
    number1 = int(input("enter your first number >"))
    global number2
    number2= int(input("enter your second number >"))

def add():
    print("ok, lets add some numbers")
    get_numbers()
    output_add = number1 + number2
    print(output_add)

def subtract():
    print("ok, lets subtract some numbers")
    get_numbers()
    output_subtract = number1 - number2
    print(output_subtract)

def average():
    print("ok, lets find the average of some numbers")
    how_many = int(input("how many numbers will there be?"))
    total = 0
    for number_count in range(how_many):
        number = int(input("Enter number> "))
        total = total + int(number)
    result = total / how_many
    print("The average of your " + str(how_many) +" numbers is " + str(result))

finished = False
while finished == False:
    command = input("do you want to add, subtract, or average? >")
    if command == "add":
        add()
    elif command == "subtract":
        subtract()
    elif command == "average":
        average()
    elif command == "bye":
        finished = True
    else:
        print("sorry, I don't understand")

print("We're closed now. Come back tomorrow.")