save project

star.py

 usernase = "python"
-userpassword = '123456'
-name = input("请输入用户名：")
-password =input("请输入密码:")
-if name == username and password == userpassword:
-    print("登录成功")
\ No newline at end of file
+userpassword = "123456"
+while True:
+    name = input("请输入用户名：")
+    password =input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功")
+        break
+    print("用户名和密码错误!请重新输入")
+