List capital letters

[ricardodepaula]

Hello again!

I'm trying to return a list of all the indexes in the string that have capital letters.

lista =[]
def capital_letters(arg):
   for i in arg:
       if i.isupper():
                            #place the capital letters in the list
           return lista

print(capital_letters('tZtTtT'))

I tried:

lista.append(i)

but it return only the first capital letter in the string.