save project

diy2.py

 i=3
-username = "python"
+username = "qwertyuiop"
 userpassword = "123456"
 while True:
-    if i<0:
+    if i>0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
         if name == username and password == userpassword:
@@ -13,6 +13,8 @@ while True:
             continue
         if password != userpassword:
             print("密码错误，请重新输入")
+            i-=1
+            print("还剩下"+[i]+"次机会")
     else:
         print("你的账号已锁定")
         exit()