save project

diy1.py

@@ -10,6 +10,7 @@ while True:
         break
         break
     if a!=username:
     if a!=username:
         print("账号错误，请重试")
         print("账号错误，请重试")
+        continue
     if b!=userpassword:
     if b!=userpassword:
         print("密码错误，请重试")
         print("密码错误，请重试")
 print("欢迎来到贝尔编程！")
 print("欢迎来到贝尔编程！")