def count_vowels(text: str) -> int:
    # Escribe tu solución aquí
    vocales = 0
    text = text.strip().lower()
    bandera = len(text)
    if text == 0:
        return 0
    for i in text:
        if i == 'a' or i == 'e' or i == 'i' or i == 'o' or i == 'u':
            vocales +=1
        pass
    return vocales