snazzy

Stylish ANSI terminal colors.

Usage

from snazzy import enable_colors, green, wrap

enable_colors()

print("That looks " + green("good") + ", right?")

That looks good, right?

Note two things:

1. snazzy is inactive by default, so we have to call enable_colors() first.
2. The function green(<text>) wraps the text in ANSI escape sequences to apply green foreground color and reset to the default color afterwards.

The function green(<text>) is only a convenience shortcut for wrap(<text>, ...):

assert green("good") == wrap("good", fg="green")

However wrap() is more powerful and flexible, since it also allows to set background color and attributes (bold, italic, underline):

print(wrap("white on blue", "white", bg="blue"))
print(wrap("ERROR:", "yellow", bg="red", bold=True) + " that went wrong.")

Alternative pattern 'context manager':

with Snazzy(fg="green", bg="black"))
    print("This is so eighties...")

Alternative pattern 'explicit':

print(ansi("green", bg="black"), end="")
print("This is so eighties...")
print(ansi_reset(), end="")

Enable Colors

Snazzy is disabled by default, because not all terminals and platforms support ANSI codes, resulting in ugly text.
Also, when output is redirected to log files, we want to suppress those escape sequences.
Finally, a command line tool that uses snazzy might want to offer a command line argument --no-color to disable colors:

if not args.no_color:
    snazzy.enable_colors()

Until explicitly enabled, no escape sequencrs are generated, so the the wrappers behave transparently:

from snazzy import red, enable_colors

assert red("error") == "error"

enable_colors(True, True)
assert red("error") == "\x1b[91merror\x1b[39m"