python / python/cpython

Add __str__ and __repr__ to ConfigParser for Better Debugging and Unit Testing

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#127,011 23 comments 0 reactions 0 assignees View on GitHub

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stdlib type-feature
Dominant language
Python
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Description

Feature or enhancement

Proposal:

The ConfigParser class supports dictionary-like operations, including the contains protocol for checking section existence using the in operator. However, it lacks str and repr methods, essential for providing human-readable and developer-friendly representations of the configuration data. Adding these methods would enhance its usability, particularly for debugging, logging, and unit testing, by offering clear insights into its internal state.

current behavior:

str_resp: <configparser.ConfigParser object at 0x7f57e7cc5160>
repr_resp: <configparser.ConfigParser object at 0x7f57e7cc5160>

suggested behavior:


str_resp: {'GERRIT': {'api_key': 'val'}}
repr_resp: <ConfigParser: {'GERRIT': {'api_key': 'val'}}>

I haven’t started a thread on Python Discourse as this is a straightforward feature request requiring a simple accept or reject decision. I'd appreciate the clarification on whether there was a specific design reason for not including str and repr. If approved, I will raise a PR.

Has this already been discussed elsewhere?

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

Links to the previous discussion of this feature:

No response

Linked PRs
  • gh-127014
  • gh-132966

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the ConfigParser class and its existing unit tests, then review linked PRs gh-127014 and gh-132966 and the comment history before making changes. Done means the proposed string and repr formats are accepted by the project and covered by tests.

Written by the indexing model from the issue text.

Assessment

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

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