python - 尝试用更大的字典更新字典

Question

我想更新字典，例如:

dict1 = {"brand": "Ford","model": "Mustang","year": 1964}

使用这本词典:

dic2 = {"brand": "Fiat","model": "Toro","color" : "Red","value": 20000}

输出必须是:

dict1 = {"brand": "Fiat","model": "Toro","year": 1964}

我怎样才能做到这一点？

Answer 1

首先，您需要遍历要更新的字典，然后替换键的值(如果存在)。

for i in dict1:
    try:
        dict1[i] = dic2[i]
    except:
        pass

dict1
{'brand': 'Fiat', 'model': 'Toro', 'year': 1964}

更新:正如所提到的:RoadRunner try: .. except: .. 可以替换为 if i in dic2

for i in dict1:
    if i in dic2:
        dict1[i] = dic2[i]