save project

diy2.py

@@ -6,9 +6,10 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    print("用户名和密码错误!请重新输入")
     if username!=name:
-       print("用户名和密码错误!请重新输入")
+       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") 
        continue 
-    if userpassword!=password
 print("欢迎来到贝尔编程!")