save project

diy.4.py

 usename = "python"
 password = "123456"
 while True:
+    if i>0:
         us = input("请输入您的用户名：")
         if us != usename :
             print("用户名不正确，请重新输入！")
@@ -11,3 +12,7 @@ while True:
             continue
         if (us == usename)and(ps == password):
             print("用户名,密码正确")
+            break
+    else:
+        print("您的账户已被锁定，请拿证件")：
+        exit()
\ No newline at end of file