Description

hugovk

opened on Nov 24, 2024

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Feature or enhancement

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

• https://docs.python.org/3/whatsnew/3.13.html#summary-release-highlights
• https://docs.python.org/3.13/using/cmdline.html#using-on-controlling-color

Let's add colour to unittest output.

Linked PRs

• gh-127221: Add colour to unittest output #127223

Reacted by Alex Waygood, Peter Bierma, Kirill Podoprigora and Andrew Svetlov

Activity

1. hugovk

   added

   type-featureA feature request or enhancementA feature request or enhancement

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   on Nov 24, 2024
2. hugovk

   self-assigned this

   on Nov 24, 2024
3. terryjreedy commented on Nov 24, 2024

   

   terryjreedy

   on Nov 24, 2024

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   Please see #127060. For the new REPL, ANSI sequences are added to the output stream only on non-Windows systems. A GUI-based program like IDLE could learn to intercept the codes and converted to GUI-specific manipulations of the text widget. But on Windows, the console is manipulated directly, and GUI-based programs are left in the dust. I think there should first be a option to get output streams consistent across systems, with or without color codes, before extending this behavior to more output.
4. hugovk commented on Dec 3, 2024

   

   hugovk

   on Dec 3, 2024

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   @terryjreedy I don't quite follow, are you saying that there's no colour support for GUIs such as IDLE on Windows, and that we shouldn't add more colour handling until we can add colour for IDLE on Windows?

   If so, I don't think adding colour to unittest needs to wait, as running unittest from IDLE seems somewhat of an edge case.

   also, I'm not sure about the connection to #127060, that's a Linux-only bug (and when using a custom sys.excepthook).

   Reacted by Miro Hrončok
5. hugovk

   added a commit that references this issue on Dec 5, 2024

   gh-127221: Add colour to unittest output (#127223)

   23f2e8f
6. hugovk

   closed this as completedon Dec 5, 2024
7. srinivasreddy

   added a commit that references this issue on Jan 8, 2025

   pythongh-127221: Add colour to unittest output (python#127223)

   7dc6aa0

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