python 操作mongo orm - mongoengine

import mongoengine

# 连接到 MongoDB 数据库
mongoengine.connect(
    'b017bdb', host='mongodb://admin:password@localhost:27017/')


class User(mongoengine.Document):
    name = mongoengine.StringField(required=True)
    age = mongoengine.IntField()
    email = mongoengine.StringField()

    def __repr__(self):
        return f"<User(name={self.name}, age={self.age}, email={self.email})>"


# 创建新的用户对象并保存到 MongoDB
# user = User(name="Alice", age=30, email="[e-mail]")
# user.save()

print('-'*10)

# 查询所有用户
users = User.objects()  # 返回所有用户
for user in users:
    print(user.to_json())

print('-'*10)

# 查询单个用户
user = User.objects(name="Alice").first()
print(user.to_json())

print('-'*10)

# 查询满足条件的用户
users = User.objects(age__gt=25)  # 年龄大于 25 的用户
for user in users:
    print(user.to_json())

# 更新单个用户的年龄
# user = User.objects(name="Alice").first()
# if user:
#     user.update(age=31)  # 将 Alice 的年龄更新为 31

# 更新多个用户
# User.objects(age__lt=30).update(set__age=30)  # 将年龄小于 30 的所有用户的年龄更新为 30


# 删除单个用户
# user = User.objects(name="aaa").first()
# if user:
#     user.delete()

# # 删除多个用户
# User.objects(age__lt=30).delete()  # 删除所有年龄小于 30 的用户


mongoengine.disconnect()