创建一个基于两个Python类型的字典

Question

我有两个Python类型的字典的字典：

payload = {"key1":{"a":"1"},"key2":{"b":"2","c":"3"}} 

和

data = {"1":"John","2":"Jacob"} 

，我想我的输出是：

{"key1":{"a":"John"},"key2":{"b":"Jacob","c":""}} 

任何方法我尝试正确地打印值，但不更新输出字典。

Answer 1

您可以使用dict comprehension这样做：

payload = {"key1":{"a":"1"},"key2":{"b":"2","c":"3"}} 
data = {"1":"John","2":"Jacob"} 

final = {k: {i:data[j] if j in data.keys() else "" for i, j in payload[k].items()} for k in payload} 
print(final) 

输出：

{'key2': {'b': 'Jacob', 'c': ''}, 'key1': {'a': 'John'}} 

Answer 2

有这个没有单一的方法，我知道的，但你可以使用：

for k, v in payload.viewitems(): 
    payload[k] = {} 
    for kv, vv in v.viewitems(): 
     payload[k][kv] = data.get(vv, "") 

，如果你再检查​​它的内容，你是后：

{'key2': {'c': '', 'b': 'Jacob'}, 'key1': {'a': 'John'}}