save project

diy2.py

-username = "python"
-userpassword = "123456"
+aa="SB"
+bb="123456"
+
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+    a=input("名称")
+    b=input("密码")
+
+    if a==aa and b==bb:
+        break
+    elif a==aa and not b==bb:
+        print("密码错！")
+    elif not a==aa and b==bb:
+        print("账号错！")
+    else:
+        print("全错！")        
+    
+print("阿对对对")
+
+