Add colour to `test.regrtest` output

[hugovk]

Feature or enhancement

In Python 3.13 we added colour output to the new REPL, tracebacks and doctest, and in 3.14 to unittest, that can also be controlled with the PYTHON_COLORS, NO_COLOR and FORCE_COLOR environment variables:

• https://docs.python.org/3.14/whatsnew/3.14.html#unittest
• https://docs.python.org/3.14/using/cmdline.html#using-on-controlling-color

Let's add colour to test.regrtest output.

Linked PRs

• gh-127718: Add colour to test.regrtest output #127719

[JainamDosi]

Hey , i would like to contribute to this issue , can you just help me get started , please ?

[hugovk]

Hello, thank you for your interest. The link directly above your comment, and the one under "Linked PRs" in the issue description, are to a PR that already implements this.

See https://devguide.python.org/getting-started/fixing-issues/ for some tips.