结语 Python从2.7到3.13的演进历程展现了一个编程语言如何在快速变化的技术环境中保持活力和竞争力。

The final version of Python 3.9 is scheduled for release in early October, so Python maintainers believe it makes sense to remove the 2.7 compatibility layers.

As of January 1st, 2020, Python 2.7 has officially reached the end of life and will no longer receive security updates, bug fixes, or other improvements going forward.