更改字典中键的名称

更改字典中键的名称

只需2个步骤即可轻松完成：

dictionary[new_key] = dictionary[old_key]del dictionary[old_key]

或第一步：

dictionary[new_key] = dictionary.pop(old_key)

KeyError

如果

dictionary[old_key]

未定义，它将引发。请注意，这 将 删除

dictionary[old_key]

。

>>> dictionary = { 1: 'one', 2:'two', 3:'three' }>>> dictionary['ONE'] = dictionary.pop(1)>>> dictionary{2: 'two', 3: 'three', 'ONE': 'one'}>>> dictionary['ONE'] = dictionary.pop(1)Traceback (most recent call last):  File "<input>", line 1, in <module>KeyError: 1