一个用python写的三个小程序，分别用来解析xml和html和读取网络文件-One with three small programs written in python, respectively, used to parse xml and html and read a network file

用python语言写的一个小程序，用来输出肺部那契数列。-A small program written in python language, used to output the lungs Fibonacci series.

用python写的一个简单的串口通信小程序，实 现发送信息-Use python to write a simple serial communication applet that sends information