pip list --format json output ends with \x1b[0m -> JSONdecode error

Description

Using version 22.0.3 the output of pip list ends with \x1b[0m. (version 21.3.1 does not have this issue) For pip list this is not the problem, but pip list --format json has the same behaiour. -> json.decoder.JSONDecodeError: Extra data

The following options do not change the behaviour.

• –disable-pip-version-check
• –no-python-version-warning
• –no-color

Expected behavior

pip list --format json should end with a line seperator.

pip version

22.0.3

Python version

3.9.7

OS

Win10

How to Reproduce

import json
import subprocess
json.loads(subprocess.check_output(("pip", "list", "--format", "json"))

Output

json.decoder.JSONDecodeError: Extra data

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[willmcgugan]

@pradyunsg Can’t think of any reason it would, but I wouldn’t rule it out 100%. I’ll see if I can replicate this.

[da1910]

This is also causing problems with pip-audit, any attempt to actually parse the json causes errors.

I am happy to help diagnose the issue. At the moment my workaround is to stick with pip 21.3.1 which does not have this issue.

I can confirm that subprocess is called with stdout = PIPE, I can also provide environment information etc if required.

Also from what I can tell the options passed to rich are correct, style ends up set to None as I would expect.

Win 11

• Windows 11 Enterprise
• 10.0.22000
• Build 22000