diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..fd1b718
--- /dev/null
+++ b/diy2.py
@@ -0,0 +1,14 @@
+A = "python"
+B = "123456"
+while True:
+    C = input("请输入用户名:")
+    D = input("请输入密码:")
+    if A == C and B == D:
+        print("登录成功!")
+        break
+    if A != C:
+        print("NO1")
+        continue
+    if B != D:
+        print("NO2")
+print("欢迎来到贝尔编程!")
\ No newline at end of file