Flexx：用纯Python编写桌面和Web应用程序

Flexx：用纯Python编写桌面和Web应用程序

Flexx

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Introduction

Flexx is a pure Python toolkit for creating graphical user interfaces (GUI's), that uses web technology for its rendering. Apps are written purely in Python; The PScript transpiler generates the necessary JavaScript on the fly.

You can use Flexx to create (cross platform) desktop applications, web applications, and export an app to a standalone HTML document. It also works in the Jupyter notebook.

The docs are on Readthedocs. the code is on Github.

Example

Click the image below for an interactive example:

There is a demo server at http://demo.flexx.app .

Motivation

The primary motivation for Flexx is the undeniable fact that the web (i.e. browser technology) has become an increasingly popular method for delivering applications to users, also for (interactive) scientific content.

The purpose of Flexx is to provide a single application framework to create desktop applications, web apps, and (hopefully someday) mobile apps. By making use of browser technology, the library itself can be relatively small and pure Python, making it widely available and easy to use.

A word of caution

Flexx is very versatile and can be used in different ways. It also makes it easy to mix Python that runs on the server and Python that runs in the browser. This is a powerful feature but this also makes it easy to create code that becomes difficult to maintain. You, the developer, must ensure that Python and PScript code are clearly separated.

Installation

Flexx requires Python 3.5+ and also works on pypy. Further, it depends on:

the Tornado library (pure Python).the PScript library (a pure Python flexxui project).the Webruntime library (a pure Python flexxui project).the Dialite library (a pure Python flexxui project).

To install the latest release (and dependencies), use either of these commands:

pip install flexxconda install flexx -c conda-forge

Or get the bleeding edge with:

pip install https://github.com/flexxui/flexx/archive/master.zip

Supported browsers

Flexx aims to support all modern browsers, including Firefox, Chrome and Edge. Internet Explorer version 10 and up should work, but some things may be flaky.

For running desktop apps, it is needed to have Firefox or NW.js installed.

License

Flexx makes use of the liberal 2-clause BSD license. See LICENSE for details.

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