Colorama Development

Help and fixes are welcome!

Although Colorama has no requirements other than the Python standard library, development requires some Python packages, which are captured in requirements-dev.txt.

Throughout, if you're on a Mac, you can probably do something similar to the Linux instructions. Either use the makefile directly, or look in it to see what commands it executes, and manually execute something similar. PRs to automate for Mac appreciated! Especially if they just made the existing Linux Makefile targets work on Mac too.

Desired changes

Colorama is unexpectedly popular, and is now a transitive dependency of many popular and high profile projects. If we break backwards compatibility, even in a subtle way, we can break applications - or pip installs - for lots of people.

In addition, the project already takes more time & energy to maintain than the maintainers currently have available - for example the original author is now a parent, and no longer uses Windows, so time and motivation for this project are both much lower than they used to be.

As a result of both the above, we are very conservative in what sorts of changes we can accept. Generally, we are not keen on new features. Even if they are small, they still add to the future maintenance burden, increasing the surface area into which future bugs or compatibility breaks could be introduced.

This is especially true if they are new ways to generate ANSI codes (e.g. context managers for handling Fore, Back or Style changes.), since it has always been Colorama's stance that if you want to print ANSI codes, then yes we can help out with that in a rudimentary way, but if you want to do advanced things, then you should be using a different library that specializes in that, such as Termcolor, Blessings, or Rich. These libraries are much better than Colorama at generating ANSI codes for colors and the like, and probably already include the feature you are trying to add to Colorama, plus many more.

In addition to using those libraries, if you call colorama.init(), then your fancy new colors, etc, will also work on Windows. This is the main purpose of Colorama.

The kinds of submissions we would encourage work towards that goal, or fix bugs, or improve compatibility across operating systems or environements.

Makefile and PowerShell scripts

Some common commands are captured as Linux makefile targets (which could perhaps be coaxed into running on OSX in Bash), and as Windows PowerShell scripts.

Task	Linux	Windows
Create & populate virtualenv.	make bootstrap	.\bootstrap.ps1
Run tests.	make test	.\test.ps1
Build a wheel.	make build	.\build.ps1
Test the wheel.	make test-release	.\test-release.ps1
Release the wheel on PyPI	make release	.\release.ps1
Clean generated files & builds.	make clean	.\clean.ps1

The Makefile is self-documenting, so ‘make’ with no args will describe each target.

Release checklist

1. Check the CHANGELOG.rst is updated with everything since the last release, including links to merged PRs. Move the “Current release” comment from the previous version number.

2. First we'll make a candidate release. Ensure the ‘.rc1’ suffix is present on __version__ in colorama/__init.py__.py, eg:

    __version__ = '0.4.6rc1'
   

3. Run the tests locally on your preferred OS, just to save you from doing the subsequent time-consuming steps while there are still obvious problems in the code:

   • Windows:
     • First allow powershell to execute scripts, see: https://stackoverflow.com/a/32328091
     • powershell bootstrap.ps1
     • powershell test.ps1
   • Linux:
     • make bootstrap
     • make test

4. Verify you're all committed, merged to master.

5. Tag the current commit with the __version__ from colorama/__init__.py. We should start using annotated tags for releases, so:

   git tag -a -m "" $version
   git push --follow-tags
   

6. Build the distributables (sdist and wheel), on either OS:

   • Windows: .\build.ps1
   • Linux: make build

7. Test the distributables on both OS. Whichever one you do 2nd will get an HTTP 400 response on uploading to test.pypi.org, but outputs a message saying this is expected and carries on:

   • Windows: .\test-release.ps1
   • Linux: make test-release

   (This currently only tests the wheel, but should soon test the sdist too.)

8. Check the CI builds are complete and all passing.

9. Upload the distributables to PyPI:

   • On Windows: .\release.ps1
   • On Linux: make release

10. Test by installing the candidate version from PyPI, and sanity check it with ‘demo.sh’, making sure this is running against the PyPI installation, not local source.

11. Maybe wait a day for anyone using pre-release installs to report any problems?

12. Remove the ‘.rcX’ suffix from __version__ in colorama/__init__.py.

13. Repeat steps 4 to 9, for the actual (non-candidate) release.

14. Bump the version number in colorama/__init__.py, and add a ‘dev1’ suffix, eg:

    0.4.5dev1

    so that any build artifacts created are clearly labelled as not a real release. Commit and push this (directly to master is fine.)