GWR能够实现地理加权回归计算，里面有GWR4操作说明，虽然是英文，但有图片介绍，很容易理解，是GWR模型入门的好工具，适合经济学、数据挖掘等人员使用(GWR can realize geographically weighted regression calculation, including GWR4 operation instructions. Although it is in English, it has pictures to introduce, and is easy to

利用urllib.request进行爬虫， 下载百度视频页面的所有图片保存到本地(Use urllib.request for crawl. Download all the pictures from Baidu video page to local.)