diff --git a/Python-Language/01. 变量、运算符与数据类型.md b/Python-Language/01. 变量、运算符与数据类型.md
index e6e45d7..3c0a50c 100644
--- a/Python-Language/01. 变量、运算符与数据类型.md	
+++ b/Python-Language/01. 变量、运算符与数据类型.md	
@@ -153,7 +153,7 @@ print(small)  # 4
 `in`|存在| `'A' in ['A', 'B', 'C']`
 `not in`|不存在|`'h' not in ['A', 'B', 'C']`
 `is`|是| `"hello" is "hello"`
-`not is`|不是|`"hello" is not "hello"`
+`is not`|不是|`"hello" is not "hello"`
 
 
 【例子】