save project

1.py

+username="python"
+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("登陆失败")
+print("欢迎")