ported from MSX Graphic workbook(1984) p.69 List 1a / MSXグラフィック・ワークブックからのPython移植

list1a.py

# ported from MSX Graphic workbook(1984) p.69 List 1a
import pyxel

size = 255
count = 36
step = size / count
color = pyxel.COLOR_WHITE

pyxel.init(size, size)
pyxel.cls(pyxel.COLOR_PURPLE)

for i in range(count):
    pyxel.line(step*i,      size, size, size-step*i, color)
    pyxel.line(size-step*i,    0, size, size-step*i, color)
    pyxel.line(size-step*i,    0,    0, step*i,      color)
    pyxel.line(step*i,      size,    0, step*i,      color)
    pyxel.flip()

pyxel.show()