菜单选项看起来没有顺序

Question

下面的代码显示了一个选项列表，用户可以选择输入一个数字。你知道吗

这是工作正常，但我不明白为什么选项似乎没有秩序。你知道吗

而不是：

1 - User Management
2 - Uploads
8 - Exit

我有：

1 - User Management
8 - Exit
2 - Uploads

你看到问题出在哪里了吗？你知道吗

Choice = namedtuple("Choice", ['msg', 'callback'])

def nav():
    print ""
    while True:
        response_options = {'1': Choice(msg="User Management", callback=userManagment),
                            '2': Choice(msg="Uploads", callback=upload),
                            '8': Choice(msg="Exit", callback=sys.exit)}
        result = make_choice(response_options)
        if result is None:
            print "-> Selected option not available."
            print ""
        else:
            result.callback()
    return False

def make_choice(optiontable):
    for resp, choiceobj in optiontable.items():
        print("{} - {}".format(resp, choiceobj.msg))
    print ""
    print "Select an option: "
    print ""
    usr_resp = raw_input(">> ")
    print ""
    return optiontable.get(usr_resp, None)

Answer 1

标准python字典是无序的。有关按键对词典排序的问题，请参见以下问题：How can I sort a dictionary by key?