[jszymborski]

FWIW, PyPy supports NumPy and Pandas since at least v5.9.

That said, of all the reasons stated here, it's why I don't primarily use PyPy (lots of libraries still missing)

[pletnes]

But pypy doesn’t necessarily perform as well, and it can’t jit compile the already compiled C code in numpy, so any benefits are often lost.