save project

diy2.py

@@ -5,11 +5,13 @@ while True:
     if i>0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword:
             print("登录成功!")
             break
         if name !=username:
             print("用户名错误")
+            print("温馨提示:您还有"+str(i)+"次登录机会")
             continue
         if password !=password:
             print("密码错误")