Python 3.14 ships built‑in JIT, slashing data‑science runtimes
Python 3.14 finally bundles an opt‑in JIT compiler in the standard installers. The JIT watches hot code paths, compiles them to native machine code, and can halve execution time for typical data‑science loops, delivering up to 2.5× speed‑ups without breaking C‑extensions. Early benchmarks suggest a practical performance boost for many analytics workloads.