Python help thread?

Code:

def GetFirstVowelIndex(inputString):
    for i, eachLetter in enumerate(inputString):
        if IsVowel(eachLetter):
            return i
    return -1

Code:

import re

def FindDoubleConsonants(inputString):
    doubleLetters = re.findall('([a-zA-Z])\\1', inputString)
    return [eachDoubleLetter for eachDoubleLetter in doubleLetters if not IsVowel(eachDoubleLetter)]