Check presence of vowels in a string

Question

I need to check whether a vowel is present in a word. If it is, an operation should be carried out on the word say op(word). I want to avoid a for loop because

Answer 1

Using set.isdisjoint (This method returns as soon as it found match):

>>> vowels = set('aeiou') # set('aeiouAEIOU') if you want case-insensitivty
>>> not vowels.isdisjoint('bcd')
False
>>> not vowels.isdisjoint('hello')
True