说明：  Kivy是一个用于开发多点触摸应用程序的开源库。它是跨平台(linux/osx/windows/android/IOS)，并按照麻省理工学院许可证. 它提供了对许多点触摸输入设备的本地支持，一个不断增长的多触控小部件库和硬件加速OpenGL绘图。Kivy旨在让您尽可能快速、轻松地构建自定义和高度交互的应用程序。 使用Kivy，您可以充分利用Python的动态特性。有成千上万的高质量的免费库可以集成到您的应用程序中。同时，性能关键部件使用Cython.
(Kivy is an open source library for developing multi-touch applications. It is cross-platform (Linux/OSX/Windows/Android/iOS) and released under the terms of the MIT License. It comes with native support for many multi-touch input devices, a growing library of multi-touch aware widgets and hardware accelerated OpenGL drawing. Kivy is designed to let you focus on building custom and highly interactive applications as quickly and easily as possible. With Kivy, you can take full advantage of the dynamic nature of Python. There are thousands of high-quality, free libraries that can be integrated in your application. At the same time, performance-critical parts are implemented using Cython.)