利用python开发一款跨平台的串口通讯程序，基于串口线程的异步通讯。实现自动查找可用串口，数据帧的异步接收，数据分析和图形显示，可作为硬件调试用的上位机软件。(Using Python to develop a cross platform serial communication program, asynchronous communication based on serial thread. Automatic lookup of available serial ports, asynchronous data frame reception, data analysis and graphics display, can be used as hardware debugging for the upper computer software.)