save project

diy2.py

+i=3
 username = "python"
 userpassword = "123456"
 while True:
@@ -6,9 +7,13 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    elif name != username:
+    if name != username:
         print("用户名错误！请重新输入")
-    else password != userpassword:
+        i-=i
+    if pass password != userpassword:
         print("密码错误！请重新输入")
+        i-=i
+    if i=0:
+        exit()
     print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
\ No newline at end of file