From 40d511fadcbf94c8f01493ea7591cad01cc42158 Mon Sep 17 00:00:00 2001
From: Kwanghoon Choi <lazyswamp@gmail.com>
Date: Mon, 10 Oct 2022 15:24:19 +0900
Subject: [PATCH] Update type-concepts.md (#4029)

A fix to add a missing parameter to isinstance as:
 - isinstance(val, Bar)
---
 docs/type-concepts.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/type-concepts.md b/docs/type-concepts.md
index aab49458b..0d1e7d19c 100644
--- a/docs/type-concepts.md
+++ b/docs/type-concepts.md
@@ -196,7 +196,7 @@ class Foo: pass
 class Bar: pass
 
 def func1(val: Union[Foo, Bar]):
-    if isinstance(Bar):
+    if isinstance(val, Bar):
         reveal_type(val) # Bar
     else:
         reveal_type(val) # Foo