Prime number test

#  name: primetest
#  @param positive integer
#  @return boolean true or false
#  Test to see if the number is prime
def primetest(num):
    """Test primeness return boolean True or False"""
    prime=True

    if num == 1:
        prime=False
        return prime

    i = 2
    while i <= math.sqrt(num):
        if num % i == 0:
            prime = False
            break
        i=i+1

    return prime