关于嵌套字典的问题有没有一种方法可以将嵌套字典合并到一个字典中

def merge_dicts(d1, d2):
    for key in d2:
        if key in d1 and isinstance(d1[key], dict) and isinstance(d2[key], dict):
            merge_dicts(d1[key], d2[key])
        else:
            d1[key] = d2[key]
    return d1

dict1 = {
    "key1": "value1",
    "key2": {
        "subkey1": "subvalue1",
        "subkey2": "subvalue2"
    }
}

dict2 = {
    "key3": "value3",
    "key2": {
        "subkey3": "subvalue3"
    }
}

merged_dict = merge_dicts(dict1, dict2)
print(merged_dict)

{
    "key1": "value1",
    "key2": {
        "subkey1": "subvalue1",
        "subkey2": "subvalue2",
        "subkey3": "subvalue3"
    },
    "key3": "value3"
}