如何拆分字典中的列表以创建新的字典？

def split_dict(dictionary):
    new_dict = {}
    for key, value in dictionary.items():
        if isinstance(value, list):
            for item in value:
                if item in new_dict:
                    new_dict[item].append(key)
                else:
                    new_dict[item] = [key]
    return new_dict

# 示例用法
original_dict = {
    'fruit': ['apple', 'banana'],
    'color': 'red',
    'animal': ['cat', 'dog'],
    'number': 42
}

result_dict = split_dict(original_dict)
print(result_dict)

{'apple': ['fruit'], 'banana': ['fruit'], 'cat': ['animal'], 'dog': ['animal']}