python / python/cpython

`PYTHON_LLTRACE`/`PYTHON_OPT_DEBUG` only reads first character of environment variable

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interpreter-core type-feature
Dominant language
Python
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Description

Feature or enhancement

Proposal:

The PYTHON_LLTRACE and PYTHON_OPT_DEBUG environment variables are currently parsed by only reading the first character:

lltrace = *python_lltrace - '0';  // '10' becomes 1

This means values like PYTHON_LLTRACE=10 are interpreted as 1 instead of 10.

PR: #148636

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs
  • gh-148636

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Research direction

The issue identifies PYTHON_LLTRACE and PYTHON_OPT_DEBUG environment-variable parsing and points to PR #148636. Start by reviewing that PR and the existing parsing for these variables; done means multi-digit values are handled as intended without regressing current behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
operating-systems
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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