# Exercise nr. 11 from practicepython.org

def get_int(input_text="Enter a number: "):
    while True:
        try:
            return int(input(input_text))
            break
        except ValueError:
            print("Use a valid number!")


def is_priem(getal):
    l = list(range(1,getal+1))
    if len([div for div in l if getal%div == 0]) == 2:
        print("%d is a prime"%getal)
    else:
        print("%d is not a prime"%getal)

def try_again():
    while True:
        inp=input("Do u want to try again? (y/n): " )
        if (c:= inp.lower()) == "n" or c=="no" :
            return False
            break
        elif c == "y" or c =="yes":
            return True
            break
        else:
            print("I'm not sure what you mean.. please answer with yes or no")



cont=True
while cont == True:
    is_priem(get_int())
    cont=try_again()


print("Goodbye!")