Boolean variable does not get updated

I've got a simple piece of code that asks for user input and returns a boolean variable. In case the input was unacceptable, the user has the chance to correct herself. But the boolean gets properly updated only when the else part of the if-statement is not invoked. When it is, the function always returns False.

def tryAgain():
    bol = False
    print('Do you want to try again? (Y/N)')
    answer = input('> ').lower()
    if (answer == 'y' or answer == 'n'):
        if answer == 'y':
            bol = True
    else:
        print('Your answer could not be parsed')
        tryAgain()
    return bol