diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..3ee6c28
--- /dev/null
+++ b/diy2.py
@@ -0,0 +1,20 @@
+            
+username = "python"
+userpassword = "123456"
+i = 3
+while True:
+    if i >0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if username != name:
+            print("用户名错误!请重新输入")
+            continue
+        if userpassword!=password:
+            print("密码错误！请重新输入")
+    else:
+        print("你没机会了，拜拜，走好不送")
+print("欢迎来到贝尔编程!")