Identifying standard library APIs removed in Python 3.15 from your code using AST—502 public name differences and a comparison with ruff, pyupgrade, and ver…

Python 3.15.0 was released on October 9, 2026. The "Removed" section of the official "What's New in Python 3.15" document ...
linuxiac

Python 3.15 Released with Faster JIT, Lazy Imports, and UTF-8 by Default

Python 3.15 introduces lazy imports, UTF-8 as the default encoding, faster experimental JIT performance, and new profiling ...

It's just luck that it works — 74.5% of 455 AI libraries were importing dependencies not listed in requirements.txt

Yet, it's a ModuleNotFoundError in CI. When you ask an AI agent to 'set this up and run it,' it stops at the very first step.
blog.csdn

Python启动慢？用importlib高阶优化import加载性能

import操作并非简单读文件，而是涉及缓存查找、路径搜索、字节码编译、模块初始化等多步流程，重型依赖库的顶层初始化代码会显著拖慢冷启动。 理解Python导入系统的核心机制，即可借助importlib这一标准库接口介入模块查找与加载流程。