This paper analyzes the features of Python and the software structure of applications developed by combining Python with system programming language. A Logo-like interactive plot application is developed to explain the implementation steps.

• 本文介绍了Python语言的特点 ,给出了混合运用Python语言和系统编程语言开发的软件结构 ,并在此基础上开发了一个类似Logo语言的交互式绘图应用。