Python 2.7.12 -替换嵌套在另一个字典中的列表中的字典键

def replace_nested_dict_key(dictionary, old_key, new_key):
    for key, value in dictionary.items():
        if isinstance(value, list):
            for item in value:
                if isinstance(item, dict):
                    if old_key in item:
                        item[new_key] = item.pop(old_key)
        elif isinstance(value, dict):
            replace_nested_dict_key(value, old_key, new_key)
    return dictionary

my_dict = {
    "key1": "value1",
    "key2": [
        {"nested_key1": "nested_value1"},
        {"nested_key2": "nested_value2"}
    ],
    "key3": {
        "nested_key3": "nested_value3"
    }
}

updated_dict = replace_nested_dict_key(my_dict, "nested_key1", "new_key1")
print(updated_dict)

{
    "key1": "value1",
    "key2": [
        {"new_key1": "nested_value1"},
        {"nested_key2": "nested_value2"}
    ],
    "key3": {
        "nested_key3": "nested_value3"
    }
}