Package: cols
ColoramaMakes ANSI escape character sequences (for producing colored terminal text and
cursor positioning) work under MS Windows.PyPI for releasesÂ·Github for sourceÂ·Colorama for enterprise on TideliftIf you find Colorama useful, pleaseto the authors. Thank you!Installationpipinstallcolorama# orcondainstall-canacondacoloramaDescriptionANSI escape character sequences have long been used to produce colored terminal
text and cursor positioning on Unix and Macs. Colorama makes this work on
Windows, too, by wrappingstdout, stripping ANSI sequences it finds (which
would appear as gobbledygook in the output), and converting them into the
appropriate win32 calls to modify the state of the terminal. On other platforms,
Colorama does nothing.This has the upshot of providing a simple cross-platform API for printing
colored terminal text from Python, and has the happy side-effect that existing
applications or libraries which use ANSI sequences to produce colored output on
Linux or Macs can now also work on Windows, simply by callingcolorama.init().An alternative approach is to installansi.syson Windows machines, which
provides the same behaviour for all applications running in terminals. Colorama
is intended for situations where that isn’t easy (e.g., maybe your app doesn’t
have an installer.)Demo scripts in the source code repository print some colored text using
ANSI sequences. Compare their output under Gnome-terminal’s built in ANSI
handling, versus on Windows Command-Prompt using Colorama:These screenshots show that, on Windows, Colorama does not support ANSI ‘dim
text’; it looks the same as ‘normal text’.UsageInitialisationApplications should initialise Colorama using:fromcoloramaimportinitinit()On Windows, callinginit()will filter ANSI escape sequences out of any
text sent tostdoutorstderr, and replace them with equivalent Win32
calls.On other platforms, callinginit()has no effect (unless you request other
optional functionality; see “Init Keyword Args”, below). By design, this permits
applications to callinit()unconditionally on all platforms, after which
ANSI output should just work.To stop using Colorama before your program exits, simply calldeinit().
This will restorestdoutandstderrto their original values, so that
Colorama is disabled. To resume using Colorama again, callreinit(); it is
cheaper than callinginit()again (but does the same thing).Colored OutputCross-platform printing of colored text can then be done using Colorama’s
constant shorthand for ANSI escape sequences:fromcoloramaimportFore,Back,Styleprint(Fore.RED+'some red text')print(Back.GREEN+'and with a green background')print(Style.DIM+'and in dim text')print(Style.RESET_ALL)print('back to normal now')…or simply by manually printing ANSI sequences from your own code:print('\033[31m'+'some red text')print('\033[39m')# and reset to default color…or, Colorama can be used in conjunction with existing ANSI libraries
such as the venerableTermcoloror the fabulousBlessings.
This is highly recommended for anything more than trivial coloring:fromcoloramaimportinitfromtermcolorimportcolored# use Colorama to make Termcolor work on Windows tooinit()# then use Termcolor for all colored text outputprint(colored('Hello, World!','green','on_red'))Available formatting constants are:Fore: BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, RESET.
Back: BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, RESET.
Style: DIM, NORMAL, BRIGHT, RESET_ALLStyle.RESET_ALLresets foreground, background, and brightness. Colorama will
perform this reset automatically on program exit.Cursor PositioningANSI codes to reposition the cursor are supported. Seedemos/demo06.pyfor
an example of how to generate them.Init Keyword Argsinit()accepts some**kwargsto override default behaviour.init(autoreset=False):If you find yourself repeatedly sending reset sequences to turn off color
changes at the end of every print, theninit(autoreset=True)will
automate that:fromcoloramaimportinitinit(autoreset=True)print(Fore.RED+'some red text')print('automatically back to default color again')init(strip=None):PassTrueorFalseto override whether ANSI codes should be
stripped from the output. The default behaviour is to strip if on Windows
or if output is redirected (not a tty).init(convert=None):PassTrueorFalseto override whether to convert ANSI codes in the
output into win32 calls. The default behaviour is to convert if on Windows
and output is to a tty (terminal).init(wrap=True):On Windows, Colorama works by replacingsys.stdoutandsys.stderrwith proxy objects, which override the.write()method to do their work.
If this wrapping causes you problems, then this can be disabled by passinginit(wrap=False). The default behaviour is to wrap ifautoresetorstriporconvertare True.When wrapping is disabled, colored printing on non-Windows platforms will
continue to work as normal. To do cross-platform colored output, you can
use Colorama’sAnsiToWin32proxy directly:importsysfromcoloramaimportinit,AnsiToWin32init(wrap=False)stream=AnsiToWin32(sys.stderr).stream# Python 2print>>stream,Fore.BLUE+'blue text on stderr'# Python 3print(Fore.BLUE+'blue text on stderr',file=stream)Recognised ANSI SequencesANSI sequences generally take the form:ESC [ <param> ; <param> ... <command>Where<param>is an integer, and<command>is a single letter. Zero or
more params are passed to a<command>. If no params are passed, it is
generally synonymous with passing a single zero. No spaces exist in the
sequence; they have been inserted here simply to read more easily.The only ANSI sequences that Colorama converts into win32 calls are:ESC [ 0 m       # reset all (colors and brightness)
ESC [ 1 m       # bright
ESC [ 2 m       # dim (looks same as normal brightness)
ESC [ 22 m      # normal brightness

# FOREGROUND:
ESC [ 30 m      # black
ESC [ 31 m      # red
ESC [ 32 m      # green
ESC [ 33 m      # yellow
ESC [ 34 m      # blue
ESC [ 35 m      # magenta
ESC [ 36 m      # cyan
ESC [ 37 m      # white
ESC [ 39 m      # reset

# BACKGROUND
ESC [ 40 m      # black
ESC [ 41 m      # red
ESC [ 42 m      # green
ESC [ 43 m      # yellow
ESC [ 44 m      # blue
ESC [ 45 m      # magenta
ESC [ 46 m      # cyan
ESC [ 47 m      # white
ESC [ 49 m      # reset

# cursor positioning
ESC [ y;x H     # position cursor at x across, y down
ESC [ y;x f     # position cursor at x across, y down
ESC [ n A       # move cursor n lines up
ESC [ n B       # move cursor n lines down
ESC [ n C       # move cursor n characters forward
ESC [ n D       # move cursor n characters backward

# clear the screen
ESC [ mode J    # clear the screen

# clear the line
ESC [ mode K    # clear the lineMultiple numeric params to the'm'command can be combined into a single
sequence:ESC [ 36 ; 45 ; 1 m     # bright cyan text on magenta backgroundAll other ANSI sequences of the formESC [ <param> ; <param> ... <command>are silently stripped from the output on Windows.Any other form of ANSI sequence, such as single-character codes or alternative
initial characters, are not recognised or stripped. It would be cool to add
them though. Let me know if it would be useful for you, via the Issues on
GitHub.Status & Known ProblemsI’ve personally only tested it on Windows XP (CMD, Console2), Ubuntu
(gnome-terminal, xterm), and OS X.Some presumably valid ANSI sequences aren’t recognised (see details below),
but to my knowledge nobody has yet complained about this. Puzzling.See outstanding issues and wish-list:https://github.com/tartley/colorama/issuesIf anything doesn’t work for you, or doesn’t do what you expected or hoped for,
I’d love to hear about it on that issues list, would be delighted by patches,
and would be happy to grant commit access to anyone who submits a working patch
or two.LicenseCopyright Jonathan Hartley & Arnon Yaari, 2013-2020. BSD 3-Clause license; see
LICENSE file.DevelopmentHelp and fixes welcome!Tested on CPython 2.7, 3.5, 3.6, 3.7 and 3.8.No requirements other than the standard library.
Development requirements are captured in requirements-dev.txt.To create and populate a virtual environment:./bootstrap.ps1 # Windows
make bootstrap # LinuxTo run tests:./test.ps1 # Windows
make test # LinuxIf you use nose to run the tests, you must pass the-sflag; otherwise,nosetestsapplies its own proxy tostdout, which confuses the unit
tests.To build a local wheel file:./build.ps1 # Windows
make build # LinuxTo test the wheel, (upload to test PyPI, then ‘pip install’ & use it):./test-release.ps1 # Windows
make test-release # LinuxTo upload the wheel to PyPI:./release.ps1 # Windows
make release # LinuxTo clean all generated files, builds, virtualenv:./clean.ps1 # Windows
make clean # LinuxProfessional supportProfessional support for colorama is available as part of theTidelift Subscription.
Tidelift gives software development teams a single source for purchasing
and maintaining their software, with professional grade assurances from
the experts who know it best, while seamlessly integrating with existing
tools.ThanksMarc Schlaich (schlamar) for asetup.pyfix for Python2.5.Marc Abramowitz, reported & fixed a crash on exit with closedstdout,
providing a solution to issue #7’s setuptools/distutils debate,
and other fixes.User ‘eryksun’, for guidance on correctly instantiatingctypes.windll.Matthew McCormick for politely pointing out a longstanding crash on non-Win.Ben Hoyt, for a magnificent fix under 64-bit Windows.Jesse at Empty Square for submitting a fix for examples in the README.User ‘jamessp’, an observant documentation fix for cursor positioning.User ‘vaal1239’, Dave Mckee & Lackner Kristof for a tiny but much-needed Win7
fix.Julien Stuyck, for wisely suggesting Python3 compatible updates to README.Daniel Griffith for multiple fabulous patches.Oscar Lesta for a valuable fix to stop ANSI chars being sent to non-tty
output.Roger Binns, for many suggestions, valuable feedback, & bug reports.Tim Golden for thought and much appreciated feedback on the initial idea.User ‘Zearin’ for updates to the README file.John Szakmeister for adding support for light colorsCharles Merriam for adding documentation to demosJurko for a fix on 64-bit Windows CPython2.5 w/o ctypesFlorian Bruhin for a fix when stdout or stderr are NoneThomas Weininger for fixing ValueError on WindowsRemi Rampin for better Github integration and fixes to the README fileSimeon Visser for closing a file handle using ‘with’ and updating classifiers
to include Python 3.3 and 3.4Andy Neff for fixing RESET of LIGHT_EX colors.Jonathan Hartley for the initial idea and implementation.