ANSI color codes in Python

colors.py

# SGR color constants
# rene-d 2018

class Colors:
    """ ANSI color codes """
    BLACK = "\033[0;30m"
    RED = "\033[0;31m"
    GREEN = "\033[0;32m"
    BROWN = "\033[0;33m"
    BLUE = "\033[0;34m"
    PURPLE = "\033[0;35m"
    CYAN = "\033[0;36m"
    LIGHT_GRAY = "\033[0;37m"
    DARK_GRAY = "\033[1;30m"
    LIGHT_RED = "\033[1;31m"
    LIGHT_GREEN = "\033[1;32m"
    YELLOW = "\033[1;33m"
    LIGHT_BLUE = "\033[1;34m"
    LIGHT_PURPLE = "\033[1;35m"
    LIGHT_CYAN = "\033[1;36m"
    LIGHT_WHITE = "\033[1;37m"
    BOLD = "\033[1m"
    FAINT = "\033[2m"
    ITALIC = "\033[3m"
    UNDERLINE = "\033[4m"
    BLINK = "\033[5m"
    NEGATIVE = "\033[7m"
    CROSSED = "\033[9m"
    END = "\033[0m"
    # cancel SGR codes if we don't write to a terminal
    if not __import__("sys").stdout.isatty():
        for _ in dir():
            if isinstance(_, str) and _[0] != "_":
                locals()[_] = ""
    else:
        # set Windows console in VT mode
        if __import__("platform").system() == "Windows":
            kernel32 = __import__("ctypes").windll.kernel32
            kernel32.SetConsoleMode(kernel32.GetStdHandle(-11), 7)
            del kernel32


if __name__ == '__main__':
    for i in dir(Colors):
        if i[0:1] != "_" and i != "END":
            print("{:>16} {}".format(i, getattr(Colors, i) + i + Colors.END))

colors.sh

#! /bin/bash
# rene-d 2015

# définition de constantes SGR pour affichage de couleur
# exemple: echo -e ${COLOR_RED}rouge${COLOR_END}

if ! tty -s; then

  # ne pas changer l'indentation des lignes suivantes
  COLOR_BLACK=""
  COLOR_RED=""
  COLOR_GREEN=""
  COLOR_BROWN=""
  COLOR_BLUE=""
  COLOR_PURPLE=""
  COLOR_CYAN=""
  COLOR_LIGHT_GRAY=""
  COLOR_DARK_GRAY=""
  COLOR_LIGHT_RED=""
  COLOR_LIGHT_GREEN=""
  COLOR_YELLOW=""
  COLOR_LIGHT_BLUE=""
  COLOR_LIGHT_PURPLE=""
  COLOR_LIGHT_CYAN=""
  COLOR_LIGHT_WHITE=""
  COLOR_BOLD=""
  COLOR_FAINT=""
  COLOR_ITALIC=""
  COLOR_UNDERLINE=""
  COLOR_BLINK=""
  COLOR_NEGATIVE=""
  COLOR_CROSSED=""
  COLOR_END=""

else

# ne pas indenter les lignes suivantes (pour le sed suivant)
COLOR_BLACK="\033[0;30m"
COLOR_RED="\033[0;31m"
COLOR_GREEN="\033[0;32m"
COLOR_BROWN="\033[0;33m"
COLOR_BLUE="\033[0;34m"
COLOR_PURPLE="\033[0;35m"
COLOR_CYAN="\033[0;36m"
COLOR_LIGHT_GRAY="\033[0;37m"
COLOR_DARK_GRAY="\033[1;30m"
COLOR_LIGHT_RED="\033[1;31m"
COLOR_LIGHT_GREEN="\033[1;32m"
COLOR_YELLOW="\033[1;33m"
COLOR_LIGHT_BLUE="\033[1;34m"
COLOR_LIGHT_PURPLE="\033[1;35m"
COLOR_LIGHT_CYAN="\033[1;36m"
COLOR_LIGHT_WHITE="\033[1;37m"
COLOR_BOLD="\033[1m"
COLOR_FAINT="\033[2m"
COLOR_ITALIC="\033[3m"
COLOR_UNDERLINE="\033[4m"
COLOR_BLINK="\033[5m"
COLOR_NEGATIVE="\033[7m"
COLOR_CROSSED="\033[9m"

  # ne pas changer l'indentation des lignes suivantes
  COLOR_END="\033[0m"

fi


# affiche les couleurs
if [ "$1" = "-h" ] ; then
  for i in `cat $0 | sed -e 's/^\(COLOR.*\)=\(.*\)/\1/p;d'`; do
    [ "$i" != "COLOR_END" ] && echo -e ${!i}$i${COLOR_END}
  done
fi