如何在mongodb中使用python中的嵌套对象

pip install pymongo

from pymongo import MongoClient

# 建立与MongoDB数据库的连接
client = MongoClient('mongodb://localhost:27017/')

# 选择数据库
db = client['mydatabase']

# 选择集合
collection = db['mycollection']

# 插入单个嵌套对象
document = {
    'name': 'John',
    'age': 30,
    'address': {
        'street': '123 Main St',
        'city': 'New York',
        'state': 'NY'
    }
}
collection.insert_one(document)

# 插入多个嵌套对象
documents = [
    {
        'name': 'Jane',
        'age': 25,
        'address': {
            'street': '456 Elm St',
            'city': 'Los Angeles',
            'state': 'CA'
        }
    },
    {
        'name': 'Bob',
        'age': 35,
        'address': {
            'street': '789 Oak St',
            'city': 'San Francisco',
            'state': 'CA'
        }
    }
]
collection.insert_many(documents)

# 查询所有文档
cursor = collection.find()

# 遍历查询结果
for document in cursor:
    print(document['name'])
    print(document['address']['city'])

# 更新单个文档
collection.update_one(
    {'name': 'John'},
    {'$set': {'address.city': 'Chicago'}}
)

# 更新多个文档
collection.update_many(
    {'address.state': 'CA'},
    {'$set': {'address.state': 'California'}}
)

# 删除单个文档
collection.delete_one({'name': 'John'})

# 删除多个文档
collection.delete_many({'address.state': 'California'})