交换包含字典列表的字典中的值？

def swap_dict_values(dictionary):
    for key, value in dictionary.items():
        if isinstance(value, list) and all(isinstance(item, dict) for item in value):
            for item in value:
                for k, v in item.items():
                    if k in dictionary:
                        dictionary[k].append(v)
                    else:
                        dictionary[k] = [v]
            dictionary[key] = []
    return dictionary

my_dict = {
    'key1': [
        {'subkey1': 'value1'},
        {'subkey2': 'value2'}
    ],
    'key2': [
        {'subkey3': 'value3'},
        {'subkey4': 'value4'}
    ]
}

result = swap_dict_values(my_dict)
print(result)

{
    'subkey1': ['value1'],
    'subkey2': ['value2'],
    'subkey3': ['value3'],
    'subkey4': ['value4'],
    'key1': [],
    'key2': []
}