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Kivy Blueprints

Kivy Blueprints

By : Vasilkov
3.7 (10)
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Kivy Blueprints

Kivy Blueprints

3.7 (10)
By: Vasilkov

Overview of this book

This book is intended for programmers who are comfortable with the Python language and who want to build desktop and mobile applications with rich GUI in Python with minimal hassle. Knowledge of Kivy is not strictly required—every aspect of the framework is described when it's first used.
Table of Contents (12 chapters)
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10
A. The Python Ecosystem
11
Index

Write once, run anywhere

This whole situation creates a demand for a universal, multi-platform way to program. The problem isn't exactly new: one solution to it, created by Sun in 1995, is the Java programming language. Its marketing promise—write once, run anywhere—was never fulfilled and the language itself is unreasonably cumbersome to use. This led to many mocking variations of the slogan, culminating with write once, run away that refers to many developers abandoning Java in favor of better programming languages, including Python.

Not coincidentally, Kivy—the main topic of this book—is a graphical user interface library facilitating easy creation of multi-platform Python applications. The main features of Kivy toolkit are as follows:

  • Compatibility: Kivy-based apps work in Linux, Mac OS X, Windows, Android, and iOS—all from a single codebase.
  • Natural user interface: Kivy bridges the gap between different input methods, allowing you to handle a multitude of possible user interactions with similar code, mouse events and multitouch gestures alike.
  • Fast hardware-accelerated graphics: OpenGL rendering makes Kivy suitable for creating graphics-heavy applications such as videogames, and also improves the user experience with smooth transitions.
  • The use of Python: Kivy apps are written in Python, one of the better general purpose programming languages. In addition to being inherently portable, expressive, and readable, Python features a useful standard library and a rich ecosystem of third-party packages, the Python Package Index (PyPI).

Speaking of third-party packages, Kivy can be seen as a superset of many battle-tested components: a large part of its functionality relies on well-known libraries such as Pygame, SDL, and GStreamer. The API that Kivy exposes, however, is very high-level and unified.

It's worth mentioning that Kivy is free and open source MIT licensed software. In practice, this means that you can use it commercially without paying licensing fees. Its full source code is hosted on GitHub, so you can also patch bugs or add new features to it.

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