正在尝试检查字典中是否添加了不需要的键

def check_unwanted_keys(dictionary):
    unwanted_keys = ['key1', 'key2', 'key3']  # 不需要的键列表

    deleted_keys = {}  # 存储删除的键和对应的值

    for key in dictionary.keys():
        if key in unwanted_keys:
            deleted_keys[key] = dictionary.pop(key)

    return deleted_keys

# 示例用法
my_dict = {'key1': 'value1', 'key2': 'value2', 'key3': 'value3', 'key4': 'value4'}
deleted_keys = check_unwanted_keys(my_dict)

print("删除的键和对应的值：")
for key, value in deleted_keys.items():
    print(key, ":", value)

print("更新后的字典：", my_dict)