To celebrate the arrival of PyPy on Windows 64 bit, Let see if we can build a WinPython with PyPy.

Interception course with cPython:

• interesting spot is: PyPy + VSCode + Jupyterlab + Cython + HPy , on 64 bit, maybe pyside6-6.1
• WinPython 2021-03: PyPy-7.3.5 for Python3.7+ VSCode + Jupyterlab + Cython, on 64 bit only
• WinPython 2021-04: Matplotlib-3.5.0 + PySide-6.1 + HPy and performances fixes
• WinPython 2021-05: PyPy for Python-3.8, beta seems coming this summer 2021
• WinPython 2022-02 2022-03: PyPy for Python-3.9
• WinPython 2022-05: PyPy for Python-3.10
• WinPython 2023-02: PyPy for Python-3.11

so far:

• WinPython 'dot' version; Yes but missing WPPM GUI (the Qt Problem)
• SQLite_bro : Yes but slightly different behavior, 6x slower
• VScode without Jupyter: ... works by updating VSCode settings per menu, to tell where pypy3.exe is
• SQLite_bro-0.9.2 fixes PyPy compatibility
• a small Speed-Center table (below)
• Adapt Build System to automate PyPy builds like the cPython builds
• SQLite-3.35.5 in PyPy-7.3.5rc1 (becoming level with CPython)
• Numpy, Matplotlib, Pandas, scikit-learn
• Pywinpty
• a cython wheel (but compiling to cython slows things 2.5x, currently)
• statsmodels (after statsmodels made a compatibility patch)
• pyzmq fix (per Christoph Gohlke)
• Jupyter compatibility (since May 25th morning ... to integrate in a release)

Roadblocks or Hacks :

• Qt Stack: needs
  • COMPATIBLE PySide6-6.1 with PyPy,
  • COMPATIBLE Matplotlib-3.5.0 with PySide6-6.1 (end october june ?)

Other:

• follow HPy progress (hpy-0.02 there )
• performance on PyPy3 (vs optimized PyPy2):
  • Import lib speed-up like it's done in cPython (via cache)
  • better PyPy3 string handling
• performance vs cPython:
  • example from the expert shows it can indeed fly 3x cython speed
  • but it's not performant in current raw form when we use current numpy

Speed-Center:

the Nbody experiment became good in PyPy with type freezing
at CGO ’20, February 22–26, 2020, San Diego, CA, USA

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