diff --git a/diy3.py b/diy3.py
index 1ba5f09..e868ced 100644
--- a/diy3.py
+++ b/diy3.py
@@ -1,7 +1,7 @@
 message = "诺依，周末一起去看动漫展吧！"
 
 # 请使用索引的知识，取出message所有元素（不用遍历的方式）
-length=length = len(message)
+length = len(message)
 i = 0
 while i < length:
     element = message[i]