从字典列表中创建一个字典，使字典中的相同值成为关键字，这些值是剩下的项

def create_dictionary(dictionary_list):
    result_dict = {}
    
    # 遍历字典列表
    for dictionary in dictionary_list:
        for key, value in dictionary.items():
            # 检查字典中的值是否已经存在于结果字典中
            if value in result_dict:
                # 如果值已经存在，则将当前的键添加到对应的值的列表中
                result_dict[value].append(key)
            else:
                # 如果值不存在，则创建一个新的键值对
                result_dict[value] = [key]
    
    return result_dict

dictionary_list = [
    {"key1": "value1", "key2": "value2"},
    {"key3": "value1", "key4": "value3"},
    {"key5": "value2", "key6": "value4"}
]

result = create_dictionary(dictionary_list)
print(result)

{
    "value1": ["key1", "key3"],
    "value2": ["key2", "key5"],
    "value3": ["key4"],
    "value4": ["key6"]
}