Binary Clock using PyGame; Shows month, day, hour, minute and second

binclock.py

import pygame, time
from pygame.locals import *

OFFCOLOR  = (25,25,25)
ONCOLOR   = (42,65,89)
BGCOLOR   = (36,36,36)
FIELDSIZE = 25

def rect(s, c, r): # We need to use this because it isn't drawn for some unknown reason when using pygame.draw.rect
	for xx in range(r[0], r[2]):
		for yy in range(r[1], r[3]):
			s.set_at((xx, yy), c)

def drawbin(n, i, b):
	basex = n*FIELDSIZE+n
	for j in range(0, b):
		r = (j*FIELDSIZE+j, basex, (j*FIELDSIZE+j)+FIELDSIZE, basex+FIELDSIZE)
		if i & 1 << j:
			rect(screen, ONCOLOR, r)
		else:
			rect(screen, OFFCOLOR, r)

pygame.init()
pygame.display.set_mode((6*FIELDSIZE+6, 5*FIELDSIZE+5))
pygame.display.set_caption("BinClock")

screen = pygame.display.get_surface()

while True:
	t = time.localtime()
	screen.fill(BGCOLOR)
	drawbin(0, t.tm_mon, 4)
	drawbin(1, t.tm_mday, 5)
	drawbin(2, t.tm_hour, 6)
	drawbin(3, t.tm_min, 6)
	drawbin(4, t.tm_sec, 6)
	pygame.display.flip()
	time.sleep(0.5)
	event = pygame.event.poll()
	if event.type == pygame.QUIT:
		break