improve error message to hint at potential dependency on Py3.6+ finalisation as most likely cause

ddec13cb · Stefan Behnel · 8e5ee09f · ddec13cb
Commit ddec13cb authored Aug 02, 2017 by Stefan Behnel
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Cython/Utility/Coroutine.c Cython/Utility/Coroutine.c +4 -0

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--- a/Cython/Utility/Coroutine.c
+++ b/Cython/Utility/Coroutine.c
@@ -867,7 +867,11 @@ static PyObject *__Pyx_Coroutine_Close(PyObject *self) {
        #endif
        #ifdef __Pyx_AsyncGen_USED
        } else if (__Pyx_AsyncGen_CheckExact(self)) {
+#if PY_VERSION_HEX < 0x03060000
+            msg = "async generator ignored GeneratorExit - might require Python 3.6+ finalisation (PEP 525)";
+#else
            msg = "async generator ignored GeneratorExit";
+#endif
        #endif
        } else {
            msg = "generator ignored GeneratorExit";