Issue 450
ORM 到底值得嘛? 原文: PyCoder’s Weekly - Issue #450 201209 Zoom.Quiet(大妈) 用时 42 分钟 完成快译 201209 Zoom.Quiet(大妈) 用时 37 分钟 完成格式转抄. 为什么要使用 ORM (对象关系映射器)? KARIM MARZOUQ • Shared by Karim Marzouq Budding web developers learning Model-View-Controller frameworks are taught that they should use an Object Relational Mapper (ORM) to interface with their databases. But the “why” is often brushed aside or omitted entirely, leaving a fledgling programmer with burning questions like ”What are ORMs, anyway?” and “What problems do they solve?” (是也乎: 直觉上, 为了节省 SQL 培训时间, 以及将 SQL 安全隐藏到 ORM 模块中. ) 降低 Python 中的数值精度会影响现实世界的数据集吗? MARTIN JONES • Shared by Martin Jones Reducing numerical precision is a way to save memory in pandas, but does it make a difference to the conclusions that we might draw from real-world datasets? (是也乎: 这才是真正的千年虫本身 ) 用PyQt处理SQL数据库:基础 REAL PYTHON In this step-by-step tutorial, you’ll learn how to use PyQt’s built-in SQL support to create GUI applications that effectively manage SQL databases. (是也乎: 连接以及读写DB 简单, 问题是 GUI 自动生成表格.. ) 用 TensorFlow 2 对象检测 API 令已打印链接可点击 OLEKSII TREKHLEB Learn how to turn your phone’s camera into a link detector on printed media using Tensor Flow 2’s Object Detection API. 探讨/吐糟 Discussions ...