loop until user enters no

[JohnnyFobby]

I started learning python 3 days ago and needed some help on my code...

#Basic calculator
#First python calculator
#How to improve this???
name = str(input("Hello please enter in your name: "))
print("Nice meeting you " + name)
print("This is a very basic calculator that i've made. Hope you enjoy!")


def calculator():
    choose = str(input("ADDITION(a), MULTIPLICATION(m), SUBTRACTION(s), DIVISION(d) "))
    if choose == 'a':
        number1 = int(input("Choose your first number: "))
        number2 = int(input("Choose your second number: "))
        print(number1 + number2)


    elif choose == 's':
        number1 = int(input("Choose your first number: "))
        number2 = int(input("Choose your second number: "))
        print(number1 - number2)

    elif choose == 'm':
        number1 = int(input("Choose your first number: "))
        number2 = int(input("Choose your second number: "))
        print(number1 * number2)

    elif choose == 'd':
        number1 = int(input("Choose your first number: "))
        number2 = int(input("Choose your second number: "))
        print(number1 / number2)


calculator()


go_again = str(input("Would you like to go again? Y/N "))


if go_again == 'y':
            calculator()                    #How to loop this???

elif go_again == 'n':
            print("Goodbye...")
            exit()

i want to loop the "go_again" var to where it keeps running until the user enters "no", because right now it only runs once. My guess is that it needs a while loop, but how would i do that?

User has been warned for this post. Reason: bad title description