Software1 hOctober 27, 2026, 22:47

CPython drops its native JIT as PEP 836 is withdrawn

The experimental JIT compiler for CPython will be removed after authors Brandt Bucher and Savannah Ostrowski withdrew PEP 836 on October 19. The Python Steering Council had paused JIT work in June 2026, finding the proposal lacked detail on maintenance, performance evaluation, and tooling integration.

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CPython drops its native JIT as PEP 836 is withdrawn

PEP 836 was withdrawn on October 19, 2026
Council found maintenance and metrics plans insufficient
JIT speed gains were measurable but small
PyPy and CinderX offer alternative JIT approaches

#Python#CPython

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