問題：
I have two dictionaries, and I need to find the difference between the two, which should give me both a key and a value.我有兩本字典，我需要找出兩者之間的區別，這應該給我一個鍵和一個值。
I have searched and found some addons/packages like datadiff and dictdiff-master, but when I try to import them in Python 2.7, it says that no such modules are defined.我搜索並找到了一些插件/包，如 datadiff 和 dictdiff-master，但是當我嘗試在 Python 2.7 中導入它們時，它說沒有定義這樣的模塊。
I used a set here:我在這裏使用了一套：
first_dict = {}
second_dict = {}
value = set(second_dict) - set(first_dict)
print value
My output is:我的輸出是：
>>> set(['SCD-3547', 'SCD-3456'])
I am getting only keys, and I need to also get the values.我只得到鍵，我還需要得到值。