save project

diy2.py

@@ -5,13 +5,12 @@ while True:
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
-        break
-    if name != username:
-        print("用户名输入错误!")
-        continue
-    if password != userpassword:
-        print("密码输入错误!")
-        continue
+        
+    if name == username:
+        if password != userpassword:
+            print("密码输入错误!")
+    else:
+        print("用户名输入错误!")            
     if name != username and password != userpassword:
         print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")