save project

diy2.py

+i = 3
 username = "python"
 userpassword = "123456"
 while True:
+    if i > 0:
     name = input("请输入用户名:")
     password = input("请输入密码:")
     if name == username and password == userpassword:
@@ -9,7 +11,9 @@ while True:
     elif name != username:
         print("用户名不存在,请重新输入!")
         continue
-    else:
+    if password != userpassword:
         print("密码错误,请重新输入!")
-    print("用户名和密码错误!请重新输入")
+else:
+    print("密码错误,请重新输入!")
+    exit()
 print("欢迎来到贝尔编程!")
\ No newline at end of file