MongoDB 中的集合数据类型及其在 Python 中的使用

# 导入 PyMongo 包
import pymongo

# 连接 MongoDB 数据库
client = pymongo.MongoClient("mongodb://localhost:27017/")

# 选择或创建一个数据库
db = client["mydatabase"]

# 选择或创建一个集合
collection = db["mycollection"]

# 插入一条数据
data = {"name": "John", "age": 28, "address": "pidancode.com"}
collection.insert_one(data)

# 插入多条数据
data_list = [
    {"name": "Michael", "age": 45, "address": "pidancode.com"},
    {"name": "Mary", "age": 32, "address": "皮蛋编程"},
    {"name": "Alice", "age": 19, "address": "pidancode.com"}
]
collection.insert_many(data_list)

# 查询所有数据
cursor = collection.find()
for document in cursor:
    print(document)

# 查询特定条件的数据
query = {"address": "pidancode.com"}
cursor = collection.find(query)
for document in cursor:
    print(document)

# 更新一条数据
query = {"name": "John"}
new_data = {"$set": {"age": 30}}
collection.update_one(query, new_data)

# 更新多条数据
query = {"address": "pidancode.com"}
new_data = {"$set": {"age": 20}}
collection.update_many(query, new_data)

# 删除一条数据
query = {"name": "Mary"}
collection.delete_one(query)

# 删除多条数据
query = {"address": "pidancode.com"}
collection.delete_many(query)

# 删除集合
collection.drop()

# 断开 MongoDB 数据库连接
client.close()