gh-157526: Call __instancecheck__ and __subclasscheck__ without creating a bound method - #157670
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kumaraditya303 merged 2 commits intoSep 22, 2026
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Looks good. There's one issue with the call to _PyObject_LookupSpecialMethod that I think we need to deal with though.
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This reduces contention when calling these methods used by ABC on free-threading.
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