Guides
Porting to Python 3.15: What Breaks and How to Fix It
What actually breaks when you upgrade to Python 3.15: UTF-8 default encoding, removed APIs, sqlite3 and argparse changes, and what’s deprecated for 3.16
Python 3.15: What’s New
Python 3.15’s key changes — lazy imports, a new profiling package, JIT speedups, and and the other PEPs worth knowing about in the final 3.15.0 release