PEP 816: Python Finally Gets Serious About WebAssembly
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- 3 Apr 2026
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Discussion of the blog article PEP 816: Python Finally Gets Serious About WebAssembly.
CPython has had informal WebAssembly support since Python 3.11. PEP 816 changes that. Brett Cannon just locked down exactly which WASI and SDK versions each Python release will target — and why SDK versions 26 and 27 got blacklisted entirely.
Discussion thread — share findings, corrections and follow-ups below.