save project

diy2.py

 username = "python"
 userpassword = "123456"
+p=0
 while True:
+    if p==5:
+        print("ddddddddddddddddddddddddddd")
+        exit()
+    p=p+1
     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!")
         break
     if name!=username:
-        print("密码错误!请重新输入")
-    if password != userpassword:
         print("用户名错误!请重新输入")
+    if password != userpassword:
+        print("密码错误!请重新输入")
+    
 print("欢迎来到贝尔编程!")
\ No newline at end of file