Show 256 Terminal Colors with Python

256-colors.py

#!/usr/bin/env python
# heavily influenced by:
# https://askubuntu.com/questions/27314/script-to-display-all-terminal-colors

import sys

foreground_only = "-f" in sys.argv[1:] or "--fg-only" in sys.argv[1:]

write = sys.stdout.write
for fgbg in range(38, 48):
    for color in range(0, 256):
        if (((fgbg - 38)*256 + color) % 15 == 0):
            write("\n")
        write("\33[%d;5;%dm %02d;5;%03d \33[0m" % (fgbg, color, fgbg, color))
    if foreground_only:
        break