2026年10月9日，Python 3.15.0正式版将如约而至——这不是一次小修小补的版本迭代，而是一场专为AI时代量身定制的‘系统级优化’。从冷启动慢得像煮泡面的智能体CLI，到异步任务里永远抓不到的‘卡点’，再到模型返回null和字段缺失傻傻分不清的深夜debug现场……Python 3.15用一整套‘反直觉但超顺手’的新特性，悄悄把开发者从多年绕弯路的惯性中一把拽了出来。 没错，你没看错— ...

Importing modules in Python is ubiquitous; most Python programs start with at least a few import statements. But the performance impact of those imports can be large—and may be entirely wasted effort ...

Python 3.15 is expected to speed up some programs and simplifies handling immutable data. UTF-8 as standard requires testing.

Back in September, we looked at a Python Enhancement Proposal (PEP) to add "lazy" imports to the language; the execution of such an import would be deferred until its symbols were needed in order to ...

Once you know how to add and use a Python module, you will greatly extend the capabilities of the language. A Python module is an external class or set of functions that exist outside the main file of ...

The best new features in Python 3.15 Python 3.15 is now GA, and it’s the best Python yet. Get your hands on its improved JIT ...