Function that returns list of vowels in string

getVowels.py

def getVowels(word, includeY=False, unique=False):
    matches = []
    vowels = 'aeiou' if not includeY else 'aeiouy'
    for char in word:
        if char.lower() in vowels:
            matches.append(char)
    return list(set(matches)) if unique else matches

print getVowels('This is a fancy test string', includeY=True, unique=True)