save project

diy2.py

@@ -5,9 +5,14 @@ while True:
     
     name = input("请输入用户名:")
     password = input("请输入密码:")
+    n-=1
     if name == username and password == userpassword:
         print("登录成功!")
         break
+    if a!=name:
         print("用户名和密码错误!请重新输入")
-    exit()
+        print("你还有%s次机会！"%n)
+    continue
+    if b!=ps:                                                                                                                                                                                                                                                                                    
+
 print("欢迎来到干饭编程!")
\ No newline at end of file