简明python教程下载： https://sn9.us/file/22151374-416592953
python标准库下载: https://sn9.us/file/22151374-416593006
Python3程序开发指南(第二版)下载: https://sn9.us/file/22151374-416593052
用Python进行自然语言处理下载: https://sn9.us/file/22151374-416593073
python写网络爬虫下载： https://sn9.us/file/22151374-416593088
python高级编程下载： https://sn9.us/file/22151374-416593187
django中文教程下载： https://sn9.us/file/22151374-416593100