From ebb9114dfec4ddfbcaef0369db5494b4bb0a187f Mon Sep 17 00:00:00 2001
From: Moreal <dev.moreal@gmail.com>
Date: Wed, 26 Jan 2022 01:51:19 +0900
Subject: [PATCH] Prefer `VirtualMachine.is_none` method

---
 vm/src/builtins/pyunion.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vm/src/builtins/pyunion.rs b/vm/src/builtins/pyunion.rs
index fb4e1d28b4..5006822040 100644
--- a/vm/src/builtins/pyunion.rs
+++ b/vm/src/builtins/pyunion.rs
@@ -41,7 +41,7 @@ impl PyUnion {
     #[pymethod(magic)]
     fn repr(&self, vm: &VirtualMachine) -> PyResult<String> {
         fn repr_item(obj: PyObjectRef, vm: &VirtualMachine) -> PyResult<String> {
-            if obj.is(&vm.ctx.types.none_type) {
+            if vm.is_none(&obj) {
                 return Ok("None".to_string());
             }