def starting_quiz(level_selector):
    """Ask the player a few questions, saving known tools to level selector."""
    print("Please answer 'yes' if you have ever used a tool or skill before,")
    print("or 'no' if you haven't.")
    for tool in level_selector.tool_list:
        unanswered = True
        while (unanswered):
            print("Are you familiar with {}?".format(tool))
            command = input()
            command = command.lower()
            if command in ("y", "yes"):
                level_selector.add_known_tool(tool)
                unanswered = False
            elif command in ("n", "no"):
                unanswered = False
            elif command in ("exit", "stop"):
                return False
            else:
                print("Answer has to be 'yes' or 'no' (or 'exit')")
                unanswered = True
    return True