Display color blocks for ansi terminals.

256colors.py

#!/usr/bin/python
# coding: utf8

def c(color):
    print "\x1b[0m\x1b[38;5;%sm█\x1b[1m█" % color,

print "System colors:"
for color in range(8):
    c(color)
print "\x1b[0m"
for color in range(8, 16):
    c(color)
print "\x1b[0m"
print

print "Color cube, 6x6x6:"
for green in range(6):
    for red in range(6):
	    for blue in range(6):
	        color = 16 + red * 36 + green * 6 + blue
	        c(color)
	    print "\x1b[0m",
    print


print "Grayscale ramp:"
for color in range(232, 256):
    c(color)
print "\x1b[0m"