Radiant Framework

A Brython/PyScript Framework for Web Apps development.

Radiant is a Brython and PyScript framework for the quick development of web apps using Python syntax, so there is no need to care about (if you don’t want) HTML, CSS, or JavaScript. This is basically a set of scripts that allows the same file run from Python and Brython/PyScript, when is running under Python a Tornado server is created and configure the local path for serving static files, at the same time a custom HTML template is configured at runtime to import the same script, this time under Brython/PyScript.

Instalation

pip install radiant

Brython: bare minimum

#!bryhton

from radiant.server import RadiantAPI
from browser import document, html


class BareMinimum(RadiantAPI):

    def __init__(self, *args, **kwargs):
        """"""
        super().__init__(*args, **kwargs)
        document.select_one('body') <= html.H1('Radiant-Framework')


if __name__ == '__main__':
    BareMinimum()

PyScript: bare minimum

This example use a requirements.txt file to install dependencies.

#requirements.txt

numpy
matplotlib

#!pyscript

import numpy as np
from matplotlib import pyplot as plt
from radiant.server import RadiantAPI
import js


class BareMinimum(RadiantAPI):

    def __init__(self):
        print('Radiant-Framework')
        self.plot()

    def plot(self):
        """"""
        fig = plt.figure()
        ax = fig.add_subplot(111)
        x = np.linspace(0, 10, 1000)
        y = np.sin(x)
        ax.plot(x, y)
        js.document.body.prepend(self.fig2img(fig))


if __name__ == '__main__':
    BareMinimum()

Brython + PyScript

#!brython

from radiant.server import RadiantAPI, pyscript
from browser import document, html


class BareMinimum(RadiantAPI):

    def __init__(self, *args, **kwargs):
        """"""
        super().__init__(*args, **kwargs)
        document.select_one('body') <= html.H1('Radiant-Framework')

        document.select_one('body') <= html.DIV(id='mpl')
        self.plot_sin(f=5)  # will render on #mpl every time

        document.select_one('body') <= self.plot_sinc(f=1)  

        
    # will render on #mpl every time
    @pyscript(output='mpl')
    def plot_sin(self, f=10):
        """"""
        import numpy as np
        from matplotlib import pyplot as plt

        fig = plt.figure()
        ax = fig.add_subplot(111)
        x = np.linspace(0, 1, 1000)
        y = np.sin(2 * np.pi * f * x)
        ax.plot(x, y)

        return fig

    
    # will return the image object
    @pyscript()
    def plot_sinc(self, f):
        """"""
        import numpy as np
        from matplotlib import pyplot as plt

        fig = plt.figure()
        ax = fig.add_subplot(111)
        x = np.linspace(0, 10, 1000)
        y = np.sin(2 * np.pi * f * x)
        ax.plot(x, y, color='C1')

        return fig


if __name__ == '__main__':
    BareMinimum()