termcolor_dg

📦 pypi/termcolor_dg | 📑 ANSI escape code | 📑 Color codes cheatsheet

ANSI Color formatting for terminal output and log coloring. Supports 16 colors, 256 colors and 24-bit color modes.

Python 2 support is present for legacy projects, and because it is not too much work and I have to use it for now.

Example

from termcolor_dg import colored, cprint

print(colored('Hello, World!', 'light_red', 'on_blue'))
cprint('Hello, World!', 'blue', 'on_light_red', ['reverse', 'blink'])
print_red_on_cyan = lambda x: cprint(x, 'red', 'on_cyan')
print_red_on_cyan('Hello, World!')
for i in range(10):
  cprint(str(i), 'magenta', end=' ' if i != 9 else '\n')
import sys

cprint("Attention!", 196, attrs='bold', file=sys.stderr)  # 256 color mode
cprint("Attention!", (255, 0, 0), attrs='bold', file=sys.stderr)  # 24-bit color mode
import logging
from termcolor_dg import logging_basic_color_config

logging_basic_color_config()
logging.log(logging.INFO, 'test')

Colors demo screenshot (python -m termcolor_dg):

Colored logs demo screenshot (python -m termcolor_dg logs):

Environment variables

• ANSI_COLORS_FORCE: If set to anything, even empty string, color escape sequences will be added.

• ANSI_COLORS_DISABLED: If set to anything no coloring will be performed, overrides ANSI_COLORS_FORCE.

• NO_COLOR: If set to anything no coloring will be performed, overrides ANSI_COLORS_FORCE, see https://no-color.org/.

If none of the environment variables is set the colors are used only if the stdout is attached to a terminal: sys.stdout.isatty().

Text properties

Text colors	Text highlights	Alt Text highlights	Attributes
black	black	on_black	bold
red	red	on_red	dark
green	green	on_green	underline
yellow	yellow	on_yellow	blink
blue	blue	on_blue	reverse
magenta	magenta	on_magenta	concealed
cyan	cyan	on_cyan
light_grey	light_grey	on_light_grey
dark_grey	dark_grey	on_dark_grey
light_red	light_red	on_light_red
light_green	light_green	on_light_green
light_yellow	light_yellow	on_light_yellow
light_blue	light_blue	on_light_blue
light_magenta	light_magenta	on_light_magenta
light_cyan	light_cyan	on_light_cyan
white	white	on_white

Functions

Adding ANSI colors

always_colored(text, color=None, on_color=None, attrs=None, reset=True) : Returns the text with ANSI color code in front and ANSI color reset after. Arguments: : - text is the text to add color to : - color and on_color define the character and background color. Each can be a name for 16 color mode, number for the 256 color variant and list/tuple of R, G and B for the 24 bit color support. The following all define light red: 'light_red', 9, 196 and (255, 0, 0). : - attrs attributes, single attribute name, list or tuple of attributes. : - reset if set to False will suppress adding of the reset ANSI sequence at the end. Useful if you are joining another colored string, only the last reset is really needed.

colored(text, color=None, on_color=None, attrs=None, reset=True) : same as always_colored but checks if the app is running on a terminal and if the colors have been forced or disabled. The boolean termcolor_dg.DISABLED is the variable checked.

Utility functions

cprint(text='', color=None, on_color=None, attrs=None, **kwargs) : same as colored, but prints the resulting string instead of returning it.

rainbow_color(n, steps, nmax=255) : calculates the color at step n needed to produce a rainbow in steps steps with intensity up to nmax. Ex: rainbow_color(0, 120) returns (255, 0, 0), rainbow_color(30, 120) returns (128, 255, 0).

monkey_patch_logging : Monkeypatch logging.Formatter to add colors to the logs on a terminal, not customizable for now. Monkeypatch logging.LogRecord.getMessage to log formatting errors in the log format instead of throwing useless exception.

logging_basic_color_config(level='DEBUG', fmt='%(asctime)s %(message)s # %(filename)s:%(lineno)d %(name)s', color_on_terminal=True) : Basic logging configuration, coloring and report formatting errors (monkey_patch_logging). Coloring code relies on ' # ' to determine the section to print in pale dark blue (comment).

monkey_unpatch_logging : Undo the monkeypatching done by monkey_patch_logging and remove coloring and error handling.

COLOR_RESET_STR : The color and attribute ANSI reset code.

Similar projects

You may want to check out:

• 📦 pypi/termcolor - the original project
• 📦 natmey/termcolor - fork of the original termcolor that termcolor_dg extends
• 📦 pypi/colorama for more advanced options.

Interesting links

• 📑 Terminal Colors discussion with examples
• 📑 ANSI/VT100 Terminal Control Escape Sequences
• 📑 ANSI escape code
• 📑 Color codes cheatsheet
• 📑 MarkdownGuide - Basic Syntax

Terminal properties support

Assume this information is outdated.

Terminal	bold	dark	underline	blink	reverse	concealed	256 colors	24-bit color
linux	❌1	❌1	✅1	✅1	✅	❌	❌	❌
konsole	✅	✅	✅	✅	✅	✅	✅	✅
terminator	✅	✅	✅	✅	✅	✅	✅	✅
kitty	✅	✅	✅	✅	✅	❌	✅	✅
xterm	✅	❌	✅	✅	✅	✅	✅	✅
rxvt	✅	❌	✅	✅	✅	❌	✅	❌
dtterm	✅	✅	✅	reverse	✅	✅	❓	❓
teraterm	reverse	❌	✅	rev/red	✅	❌	❓	❓
aixterm	normal	❌	✅	❌	✅	✅	❓	❓
Windows	❌	❌	❌	❌	✅	✅2	❓	✅
PuTTY	✅3	✅	✅	✅4	✅	❌	✅	✅
Cygwin SSH	✅	❌	color	color	color	✅	❓	❓
Mac Terminal	✅	❓	✅	✅	✅	✅	✅	❓
iTerm2	✅	❓	✅	✅	✅	✅	✅	✅

Footnotes

1. See VGA text mode ↩ ↩² ↩³ ↩⁴

2. See Add support for the "concealed" graphic rendition attribute #6876 ↩

3. Supports color change, bold text or both. ↩

4. Disabled by default ↩