Python program to check number is prime or not.

print("Enter 'e' for exit.")
num = input("Enter any number: ")
if num == 'e':
    exit();
try:
    number = int(num)
except ValueError:
    print("Please, enter a number")
else:
    for i in range(2, number):
     if number%i == 0:
         print(number, "not prime number.")
         break;
    else:
        print(number, "prime number.")
  break;