Copied from https://git.blender.org/gitweb/gitweb.cgi/blender.git/patch/1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f Fixes . From 1db47a2ccd1e68994bf8140eba6cc2a26a2bc91f Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Thu, 12 Jul 2018 08:28:06 +0200 Subject: [PATCH] Fix PyRNA class registration w/ Python 3.7 In Python3.7 this now raises an error. --- source/blender/python/intern/bpy_rna.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c index 9052b6f580a..80b0aa7a51b 100644 --- a/source/blender/python/intern/bpy_rna.c +++ b/source/blender/python/intern/bpy_rna.c @@ -7577,10 +7577,12 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, StructRNA *srna, v if (!(flag & PROP_REGISTER)) continue; + /* TODO(campbell): Use Python3.7x _PyObject_LookupAttr(), also in the macro below. */ identifier = RNA_property_identifier(prop); item = PyObject_GetAttrString(py_class, identifier); if (item == NULL) { + PyErr_Clear(); /* Sneaky workaround to use the class name as the bl_idname */ #define BPY_REPLACEMENT_STRING(rna_attr, py_attr) \ @@ -7596,6 +7598,9 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, StructRNA *srna, v } \ Py_DECREF(item); \ } \ + else { \ + PyErr_Clear(); \ + } \ } /* intentionally allow else here */ if (false) {} /* needed for macro */ -- 2.20.1