NotImplemented == NotImplemented

src/value.c

@@ -154,6 +154,7 @@ int krk_valuesEqual(KrkValue a, KrkValue b) {
 		switch (KRK_VAL_TYPE(a)) {
 			case KRK_VAL_BOOLEAN:  return a == b;
 			case KRK_VAL_NONE:     return 1; /* None always equals None */
+			case KRK_VAL_NOTIMPL:  return 1;
 			case KRK_VAL_KWARGS:   /* Equal if same number of args; may be useful for comparing sentinels (0) to arg lists. */
 			case KRK_VAL_INTEGER:  return a == b;
 			case KRK_VAL_HANDLER:  krk_runtimeError(vm.exceptions->valueError,"Invalid value"); return 0;