4 ms·PyPy is a JIT compiler not a "real compiler", it requires warm up time to start optimizing code on runtime.by laerus 4y agoPyPy is a JIT compiler not a "real compiler", it requires warm up time to start optimizing code on runtime.Alifatisk 4y agoIn other words, PyPy is not a AOT-compiler.Animats 4y agoIt does generate machine code, which CPython does not.