Fix crashes in shared.py and plot.py

[SaurabhCodesAI]

Fixes

• Fixes Fixed crashes in shared.py and plot.py #201 by @SaurabhCodesAI

Description

This pull request fixes crashes found while testing the scripts:

• scripts/shared.py crashed with an IndexError when processing certain README files.
• scripts/plot.py had an issue with color cycling that caused index errors.
• scripts/1-fetch/gcs_fetch.py retry loop could get stuck on some HTTP errors.

Technical details

• Added bounds checking in shared.py to avoid IndexError when parsing README files.
• Corrected color cycling logic in plot.py to prevent index errors.
• Improved retry loop in gcs_fetch.py to avoid infinite retries on non retryable HTTP errors.

Tests

To verify:

1. Run the affected scripts with problematic input (README files with missing sections, data that triggers color cycling, and simulate HTTP errors).
2. Confirm that no IndexError or infinite retry occurs.
3. Check that the scripts complete successfully and produce expected output.

Screenshots

Checklist

• I have read and understood the Developer Certificate of Origin (DCO), below, which covers the contents of this pull request (PR).
• My pull request doesn't include code or content generated with AI.
• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

Developer Certificate of Origin

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Developer Certificate of Origin

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[TimidRobot]

‼️ To repeat myself (#197 (comment)):

@SaurabhCodesAI This pull request (PR) is unacceptable due to a failure to follow the PR template instructions.

[SaurabhCodesAI]

@TimidRobot Sorry about missing the template again, and thanks for your patience. I appreciate you holding the bar high, I’ll update the PR to follow the template and re request review. If there’s anything else you’d like, just let me know!

[SaurabhCodesAI]

@TimidRobot I’ve made the changes and updated the PR description to match the template. Could you please take another look and let me know if anything else is needed? Thanks!

[TimidRobot]

@TimidRobot I’ve made the changes and updated the PR description to match the template. Could you please take another look and let me know if anything else is needed? Thanks!

‼️‼️ To repeat myself (#202 (comment)):

‼️ To repeat myself (#197 (comment)):

@SaurabhCodesAI This pull request (PR) is unacceptable due to a failure to follow the PR template instructions.

The Checklist instructions include:

<!-- DON'T remove this section or any of the lines. -->
<!-- Leave incomplete or inapplicable lines unchecked. -->
<!-- Replace the [ ] with [x] to check the boxes (there is no space between x and square brackets). -->

The template is located here: creativecommons/.github/blob/main/.github/PULL_REQUEST_TEMPLATE.md

Pull requests without the Developer Certificate of Origin section won't be accepted 🙅🏻

[SaurabhCodesAI]

@TimidRobot Sorry for the repeated mistakes. I’ve carefully updated the PR to match the template. i will pay more attention to structured way of contributinng to opensource from now on. does this update match the things you were reminding me of?

[TimidRobot]

@TimidRobot Sorry for the repeated mistakes. I’ve carefully updated the PR to match the template. i will pay more attention to structured way of contributinng to opensource from now on. does this update match the things you were reminding me of?

Yes, the description looks much better now. Thank you.

[TimidRobot]

Thank you for identifying and fixing these issues

[SaurabhCodesAI]

@TimidRobot Thanks so much for your help and guidance throughout this process