Some standard color escape codes don't work in Spyder console

[kevin-guimard-ext]

Issue Report Checklist

• [X] Searched the issues page for similar reports
• [X] Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• [X] Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• [ ] Could not reproduce inside jupyter qtconsole (if console-related)
• [X] Tried basic troubleshooting (if a bug/error)
  • [X] Restarted Spyder
  • [ ] Reset preferences with spyder --reset
  • [ ] Reinstalled the latest version of Anaconda
  • [ ] Tried the other applicable steps from the Troubleshooting Guide
• [ ] Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

Do you know why some standard color escape codes don't work in Spyder?

For instance, using the yellow color code produces a red output:

What steps reproduce the problem?

1. Execute the following command: print("\033[0;33m" + "test")

What is the expected output? What do you see instead?

I expect to see the word "test" written in yellow.

Versions

• Spyder version: 5.4.3
• Python version: 3.9.12
• Qt version: 5.15.2
• PyQt version: 5.15.7
• Operating System name/version: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0                             :  1.4.0 (OK)
chardet >=2.0.0                                  :  4.0.0 (OK)
cloudpickle >=0.5.0                              :  2.2.1 (OK)
cookiecutter >=1.6.0                             :  1.7.3 (OK)
diff_match_patch >=20181111                      :  20200713 (OK)
intervaltree >=3.0.2                             :  3.1.0 (OK)
IPython >=7.31.1,<9.0.0,!=8.8.0,!=8.9.0,!=8.10.0 :  8.12.0 (OK)
jedi >=0.17.2,<0.19.0                            :  0.18.1 (OK)
jellyfish >=0.7                                  :  0.9.0 (OK)
jsonschema >=3.2.0                               :  4.17.3 (OK)
keyring >=17.0.0                                 :  23.13.1 (OK)
nbconvert >=4.0                                  :  6.4.4 (OK)
numpydoc >=0.6.0                                 :  1.5.0 (OK)
paramiko >=2.4.0                                 :  2.8.1 (OK)
parso >=0.7.0,<0.9.0                             :  0.8.3 (OK)
pexpect >=4.4.0                                  :  4.8.0 (OK)
pickleshare >=0.4                                :  0.7.5 (OK)
psutil >=5.3                                     :  5.9.0 (OK)
pygments >=2.0                                   :  2.15.1 (OK)
pylint >=2.5.0,<3.0                              :  2.16.2 (OK)
pylint_venv >=2.1.1                              :  2.3.0 (OK)
pyls_spyder >=0.4.0                              :  0.4.0 (OK)
pylsp >=1.7.2,<1.8.0                             :  1.7.2 (OK)
pylsp_black >=1.2.0                              :  1.2.1 (OK)
qdarkstyle >=3.0.2,<3.2.0                        :  3.0.2 (OK)
qstylizer >=0.2.2                                :  0.2.2 (OK)
qtawesome >=1.2.1                                :  1.2.2 (OK)
qtconsole >=5.4.2,<5.5.0                         :  5.4.2 (OK)
qtpy >=2.1.0                                     :  2.2.0 (OK)
rtree >=0.9.7                                    :  1.0.1 (OK)
setuptools >=49.6.0                              :  67.8.0 (OK)
sphinx >=0.6.6                                   :  5.0.2 (OK)
spyder_kernels >=2.4.3,<2.5.0                    :  2.4.3 (OK)
textdistance >=4.2.0                             :  4.2.1 (OK)
three_merge >=0.1.1                              :  0.1.1 (OK)
watchdog >=0.10.3                                :  2.1.6 (OK)
zmq >=22.1.0                                     :  25.0.2 (OK)

# Optional:
cython >=0.21                                    :  0.29.28 (OK)
matplotlib >=3.0.0                               :  3.7.1 (OK)
numpy >=1.7                                      :  1.24.3 (OK)
pandas >=1.1.1                                   :  1.4.2 (OK)
scipy >=0.17.0                                   :  1.10.1 (OK)
sympy >=0.7.3                                    :  1.11.1 (OK)

[ccordoba12]

Hey @kevin-guimard-ext, thanks for reporting. You said:

Do you know why some standard color escape codes don't work in Spyder?

Our support for ANSI codes is quite limited. It'd be great if you could help us to improve it, if you have time. It's implemented here:

https://github.com/jupyter/qtconsole/blob/master/qtconsole/ansi_code_processor.py

[kevin-guimard-ext]

I'd be pretty unable to... So, it's a problem linked with QT, not with Spyder?

[ccordoba12]

I'd be pretty unable to...

Sorry to hear that.

So, it's a problem linked with QT, not with Spyder?

We use the Qtconsole project to power our IPython console in Spyder. But we also maintain that project, so we could make the necessary changes to it to expand its ANSI codes support. The problem is we're understaffed, so we don't have time for it.

[kevin-guimard-ext]

Ok I see. Let's put the issue in the backlog then.

[dalthviz]

Note: Related with https://github.com/jupyter/qtconsole/issues/273