将字典中的值替换为匹配另一个字典

Question

dict_A = {
    'Key A': Value1,
    'Key B': Value2
}
dict_B = {
    Value1: ValueX,
    Value2: ValueY
}

当value-key匹配时，我如何用dict_B中的值替换dict_A中的值?

Answer 1

dict_A = {k: dict_B.get(v, v) for k, v in dict_A.items()}

Answer 2

您可以使用dict.get():

dict_A = {"Key A": "Value1", "Key B": "Value2"}
dict_B = {"Value1": "ValueX", "Value2": "ValueY"}
for key, value in dict_A.items():
    dict_A[key] = dict_B.get(value, value)
print(dict_A)

打印:

{'Key A': 'ValueX', 'Key B': 'ValueY'}