Add disclaimer to conformance results#2155
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hauntsaninja merged 3 commits intopython:mainfrom Jan 22, 2026
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srittau
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topic: conformance tests
| <h3>Python Type System Conformance Test Results</h3> | ||
| <p class="disclaimer"> | ||
| While spec conformance is important for the ecosystem, we don't recommend using it | ||
| as the primary basis for choosing a type checker. It is not (and is not meant to be) |
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This second sentence feels a bit too strong for me. Sure, a lot of the conformance suite is about esoteric topics that don't affect users much, and there are many important aspects of a practical type checker that aren't reflected in the conformance suite, but I do believe that spec conformant behavior should be user-friendly behavior.
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Okay, tried a reword
carljm
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The new wording seems fine to me. (It looks like the actual results haven't been re-generated with the new wording, though.)
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I've now seen a few different times people misunderstand exactly what spec conformance implies, so here's a PR adding a small disclaimer