Issue #16694: Add a pure Python implementation of the operator module.
Patch by Zachary Ware.
diff --git a/PCbuild/pythoncore.vcxproj.filters b/PCbuild/pythoncore.vcxproj.filters
index 915fec5..736a9c8 100644
--- a/PCbuild/pythoncore.vcxproj.filters
+++ b/PCbuild/pythoncore.vcxproj.filters
@@ -501,7 +501,7 @@
     <ClCompile Include="..\Modules\mmapmodule.c">
       <Filter>Modules</Filter>
     </ClCompile>
-    <ClCompile Include="..\Modules\operator.c">
+    <ClCompile Include="..\Modules\_operator.c">
       <Filter>Modules</Filter>
     </ClCompile>
     <ClCompile Include="..\Modules\parsermodule.c">