Colorize failing test results in `python -m test -W`

[cmaloney]

Feature or enhancement

Proposal:

Currently when python -m test is run without any colorizing environment variables (ex. FORCE_COLOR) the overall list of tests is colorized but if a test fails and its results are printed the test results are not colored. I'd like to make the output colored both sequential and parallel (-j0) runs.

Before:

After:

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-140082: Forward colorizing from libregrtest to unittest #140083