The problem with PyPy is that it doesn't support the C-API, which is required fo... | Hacker News

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fastball on Sept 18, 2024 | parent | context | favorite | on: GraalPy – A high-performance embeddable Python 3 r...

The problem with PyPy is that it doesn't support the C-API, which is required for all those other high performance libraries.

So you gain the perf of a JIT, while losing out on most everything else high-performance in the Python ecosystem.

masklinn on Sept 18, 2024 [–]

Pypy has cpyext which implements a subset of the C-API, however it comes with a long list of caveats, and is more of a backstop, they very much prefer cffi.

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