Pyjion drop-in JIT compiler for CPython 3.9. Pyjion can make your Python code execute faster without any code changes.
Pyjion is best installed from PyPi within a Python 3.9 virtual environment. There are binary wheels for macOS, Linux and Windows. Make sure you have updated pip before installing.
To install from PyPi, use pip to install from a virtual environment:
$ python -m pip install pyjion
After following the installation steps, pyjion is a python module that you can import a Python 3.9 environment.
After importing pyjion, enable it by calling pyjion.enable() which sets a compilation threshold to 0 (the code only needs to be run once to be compiled by the JIT):
>>> import pyjion >>> pyjion.enable()
Any Python code you define or import after enabling pyjion will be JIT compiled. You don’t need to execute functions in any special API, its completely transparent:
>>> def half(x): ... return x/2 >>> half(2) 1.0
Pyjion will have compiled the half function into machine code on-the-fly and stored a cached version of that compiled function inside the function object. You can see some basic stats by running pyjion.info(f), where f is the function object:
>>> pyjion.info(half) JitInfo(failed=False, compile_result=<CompilationResult.Success: 1>, compiled=True, optimizations=<OptimizationFlags.InlineFramePushPop|InlineDecref: 10>, pgc=1, run_count=1)
You can also execute Pyjion against any script or module:
Or, for an existing Python module:
pyjion -m calendar
For a full list of options, see the API Reference.