(queue, friend_name)
return queue.index(friend_name)
:param queue: list - names in the queue.
    :param friend_name: str - name of friend to find.
    :return: int - index at which the friends name was found.
def find_my_friend(queue, friend_name):
    """

    :param queue: list - names in the queue.
    :param friend_name: str - name of friend to find.
    :return: int - index at which the friends name was found.
    """
    return queue.index(friend_name)
def find_my_friend ( queue , friend_name ) : return queue . index ( friend_name )