Top New Features in Python 3.15: Lazy Imports, Faster JIT, Better Errors, Smarter Profiling

Python 3.15’s beta introduces lazy imports, a built‑in frozendict, a sentinel type, a low‑overhead statistical profiler, an upgraded JIT with 8‑13% speed gains, clearer error messages, type‑system tweaks, new list‑comprehension unpacking syntax, and a rollback to generational garbage collection.

Garbage CollectionJITLazy Import

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