String replace vowels in Python?

Question

Expected:

>>> removeVowels('apple')
"ppl"
>>> removeVowels('Apple')
"ppl"
>>> removeVowels('Banana')
'Bnn'

Code (Beginner):

def removeVowels(word):
    vowels = ('a', 'e', 'i', 'o', 'u')
    for c in word:
        if c in vowels:
            res = word.replace(c,"")
    return res 

How do I both lowercase and uppercase?

Answer 1

re.sub('[aeiou]', '', 'Banana', flags=re.I)