如何在Pymongo（$ elemMatch）中编写查询？

Question

我在mongo shell中使用此查询来获取仅与Person1相关的信息

db.collection.find({ "member.name": "Person1" }, { member: { $elemMatch: { name: "Person" } }, number: 1 })

我怎么用python编写？这是我尝试过的，但是会输出所有内容：

collection.find(dict(member = { "$elemMatch": dict(name = "Person1") }))

我的数据库：

{
  "number": 0,
  "member": [{
    "name": "Person1",
    "ad": {
      "firstline": 123,
      "secondline": 456
    }
  }, {
    "name": "Person2",
    "ad": {
      "firstline": 345,
      "secondline": 1256
    }
  }]
} 

{
  "number": 1,
  "member": [{
    "name": "Person1",
    "ad": {
      "firstline": 1323,
      "secondline": 4536
    }
  }, {
    "name": "Person2",
    "ad": {
      "firstline": 3245,
      "secondline": 123456
    }
  }]