Counting vowels
<p>Can anyone please tell me what is wrong with this script. I am a python newb but i cant seem to figure out what might be causing it not to function.</p>

<pre><code>def find_vowels(sentence):

    """
    &gt;&gt;&gt; find_vowels(test)
    1

    """

    count = 0
    vowels = "aeiuoAEIOU"
    for letter in sentence:
        if letter in vowels:
            count += 1
    print count

if __name__ == '__main__':
    import doctest
    doctest.testmod()
</code></pre>
