diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..bbd5ea1
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,3 @@
+import random
+key = "abcdefgh使用编程实现位移替换加密，制作密码机关真是太好玩了哈哈！"
+                
\ No newline at end of file