如何从python中的类返回mongoDB结果

from pymongo import MongoClient

class MongoDBClient:
    def __init__(self, host, port, db_name, collection_name):
        self.client = MongoClient(host, port)
        self.db = self.client[db_name]
        self.collection = self.db[collection_name]

    def query_data(self, query):
        result = self.collection.find(query)
        return result

# 示例用法
if __name__ == "__main__":
    # 创建MongoDB客户端实例
    mongo_client = MongoDBClient('localhost', 27017, 'mydatabase', 'mycollection')

    # 定义查询条件
    query = {'name': 'John'}

    # 调用查询方法获取结果
    result = mongo_client.query_data(query)

    # 遍历结果并打印
    for doc in result:
        print(doc)