is_this_a_prime_number.py

print('you can terminate the operation by entering 0')

while True:
    number = int(input('Enter a number:'))

    if number > 1:
        for i in range(2, number):
            if number % i == 0:
                print(number, 'is not a prime number')
                break
        else:
            print(number, 'is a prime number')

    if number == 1:
        print('try another number, not 1')

    if number == 0:
        break