simple prime checker

gistfile1.py

#!/usr/bin/env python2


def is_prime(x):
    assert type(x) == int
    assert x > 0
    if x == 2:
        return True
    for n in xrange(2, x / 2 + 1):
        if not x % n:
            return False
    return True


def anti_vowel1(s):
    vowels = 'aeiouAEIOU'
    return ''.join([x for x in s if x not in vowels])


def anti_vowel2(s):
    vowels = 'aeiouAEIOU'
    return filter(lambda x: x not in vowels, s)