Python 3 aggregate字符串 如何传递参数

Question

user_name = 'laowang'
pipeline = [ 
               {
                 $match:{"name": user_name}
               }
            ]
db.records.aggregate(pipeline):

结果
{'laowang','98’}

求python环境下如何写user_name才能收到'laowang'变量

Answer 1

{'laowang','98’}是你输出的结果吗？