auto save

diy2.py

+username = "xch"
+i=3
+userpassword = "888222666"
+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 username!=name:
+            p            print("用户名错误！请重新输入")
+rint("haiyou"+str(i)+"cijihui")
+    else:
+        print("@xchdad")
+        exit()
+print("欢迎来到QQ!")
\ No newline at end of file