Python编程元类的相关内容

Python编程：元类的简单使用

元类Python 2.7.5 旧式类class Foo(): pass foo = Foo() print(type(foo)) print(type(Foo)) print(type(type)) # <type 'instance'> # <type 'classobj'&gt...

Python编程：元类的简单使用

元类Python 2.7.5 旧式类class Foo(): pass foo = Foo() print(type(foo)) print(type(Foo)) print(type(type)) # <type 'instance'> # <type 'classobj'&gt...

高校精品课-华东师范大学 - Python数据科学基础与实践

101 课时 |

661 人已学 |

加入学习

【科技少年】Python绘画编程第一课

20 课时 |

3313 人已学 |

加入学习

【Python入门】Python数据处理编程基础

6 课时 |

369 人已学 |

加入学习

Python编程：metaclass元类实现简单的ORM

ORM全称“Object Relational Mapping”，即对象-关系映射把关系数据库的一行映射为一个对象，一个类对应一个表这样，写代码更简单，不用直接操作SQL语句。# -*- coding: utf-8 -*- # @File : 元类实例ORM.py # @Date : 2018-06...

共有3条

< 1 >

跳转至： GO

更新时间 2023-01-12 23:49:58

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","link":"https://www.aliyun.com/product/bigdata/odps/maxframe","icon":"odps","iconImg":"https://img.alicdn.com/imgextra/i1/O1CN01VpOKfU1tdExrKxFwN_!!6000000005924-2-tps-64-64.png","contentLink":"https://www.aliyun.com/product/bigdata/odps/maxframe","title":"分布式计算框架 MaxCompute MaxFrame","des":"MaxCompute MaxFrame 是阿里云自研分布式计算框架，支持 Python 编程接口并可直接使用 MaxCompute 计算资源及数据接口，与 MaxCompute Notebook、镜像管理等功能共同构成 MaxCompute 完整 Python 开发生态。","link1":"https://www.aliyun.com/product/bigdata/odps/maxframe","btn1":"产品详情","link2":"https://survey.aliyun.com/apps/zhiliao/m40AIrxhA","btn2":"产品邀测","btn3":"产品文档","link3":"https://help.aliyun.com/zh/maxcompute/user-guide/maxframe-overview-1","infoGroup":[{"infoName":"相关产品","infoContent":{"firstContentName":"MaxCompute","firstContentLink":"https://www.aliyun.com/product/odps"}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"网络智能服务 NIS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","link":"https://www.aliyun.com/product/bigdata/odps/maxframe","icon":"odps","iconImg":"https://img.alicdn.com/imgextra/i1/O1CN01VpOKfU1tdExrKxFwN_!!6000000005924-2-tps-64-64.png","contentLink":"https://www.aliyun.com/product/bigdata/odps/maxframe","title":"分布式计算框架 MaxCompute MaxFrame","des":"MaxCompute MaxFrame 是阿里云自研分布式计算框架，支持 Python 编程接口并可直接使用 MaxCompute 计算资源及数据接口，与 MaxCompute Notebook、镜像管理等功能共同构成 MaxCompute 完整 Python 开发生态。","link1":"https://www.aliyun.com/product/bigdata/odps/maxframe","btn1":"产品详情","link2":"https://survey.aliyun.com/apps/zhiliao/m40AIrxhA","btn2":"产品邀测","btn3":"产品文档","link3":"https://help.aliyun.com/zh/maxcompute/user-guide/maxframe-overview-1","infoGroup":[{"infoName":"相关产品","infoContent":{"firstContentName":"MaxCompute","firstContentLink":"https://www.aliyun.com/product/odps"}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"网络智能服务 NIS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}

分布式计算框架 MaxCompute MaxFrame

MaxCompute MaxFrame 是阿里云自研分布式计算框架，支持 Python 编程接口并可直接使用 MaxCompute 计算资源及数据接口，与 MaxCompute Notebook、镜像管理等功能共同构成 MaxCompute 完整 Python 开发生态。

产品详情

产品邀测

产品文档