如何从嵌套字典中检索所有“组”

def search_groups(dictionary):
    groups = []
    for key, value in dictionary.items():
        if key == "组":
            groups.append(value)
        elif isinstance(value, dict):
            groups.extend(search_groups(value))
    return groups

dictionary = {
    "组": "组1",
    "键1": "值1",
    "键2": {
        "组": "组2",
        "键3": "值3",
        "键4": {
            "组": "组3",
            "键5": "值5"
        }
    },
    "键6": "值6"
}

result = search_groups(dictionary)
print(result)