While we love all programming languages equally here at the Foundation, we do love Python an awful lot. Most users run their code under the “default” CPython interpreter, but over the last few years the PyPy project has made great strides in producing an highly compatible alternative interpreter with an integrated tracing JIT compiler. On x86 platforms this can improve the performance of some workloads by a factor of ten or more, and the PyPy team are now bringing the same sort of boost to the ARM world.
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