Python programming language: Here's what's new in version 3.9 RC2 Python 3.8 will retain a few Python 2.7 compatibility layers to support projects that rely on 2.7.

PSF is urging its legion of Python users to upgrade systems to Python 3.8.8 or 3.9.2, in particular to address the remote code execution (RCE) vulnerability that's tracked as CVE-2021-3177.