save project

diy2.py

@@ -8,6 +8,10 @@ while True:
         break
         break
     if username!=name:
     if username!=name:
         print("用户名错误!请重新输入")
         print("用户名错误!请重新输入")
+        continue
     if userpassword!=password:
     if userpassword!=password:
         print("密码错误!请重新输入")
         print("密码错误!请重新输入")
+        continue
+     if name != username & password != userpassword:
+        print("错误")   
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file