Welcome to the LWN.net Weekly Edition for February 24, 2022

• Python support for regular expressions: what is to be done about Python's outdated re module?
• Moving Python's bugs to GitHub: the last step in Python's move is a big one.
• A last look at the 4.4 stable series: what happened over six years of stable-kernel maintenance.
• Thoughts on software-defined silicon: Linux will support Intel's "software-defined silicon" mechanism, but users may not be thankful.
• Shadow stacks for user space: some challenges remain before this security mechanism will be ready for use.

This week's edition also includes these inner pages:

• Brief items: Brief news items from throughout the community.
• Announcements: Newsletters, conferences, security updates, patches, and more.

Please enjoy this week's edition, and, as always, thank you for supporting LWN.net.