Processing ideas and Python 3 together with P5.js in the browser.
Python 3 drawing in the web! Try it here!
Here's an example of a valid Python code using P5.js API:
def setup():
createCanvas(200, 200)
def draw():
background(200)
diameter = sin(frameCount / 60) * 50 + 50
fill('blue')
ellipse(100, 100, diameter, diameter)