Prime checking function(s). This is the least efficient way to check for primes, I'm sure!

is_prime.py

def is_prime(num):
    """
    Returns a boolean if the input argument is a prime number or not.
    """
    if type(num) != int:
        return False
    if num <= 0:
        return False
    if num == 1:
        return True
    if num >= 2:
        for i in range(2, num):
            if num % i == 0:
                return False
        return True