notcurses/cffi/notcurses-pydemo

#!/usr/bin/python3

import locale
from notcurses import notcurses

def demo():
    nc = notcurses.Notcurses()
    stdplane = nc.stdplane()
    dims = stdplane.getDimensions()
    r = 0x80
    g = 0x80
    b = 0x80
    for y in range(dims[0]):
        for x in range(dims[1]):
            stdplane.setFgRGB(r, g, b)
            stdplane.setBgRGB(b, r, g)
            stdplane.putEGCYX(y, x, "X")
            b = b + 2
            if b == 256:
                b = 0
                g = g + 2
                if g == 256:
                    g = 0
                    r = r + 2
    nc.render()


locale.setlocale(locale.LC_ALL, "")
demo()