Broken Links Found in Documentation

[github-actions]

Link Check Report

🚨 2 broken link(s) and 0 redirect(s) were found in the documentation.

Details:

• Repository: QuantEcon/lecture-python-programming
• Workflow: Link Checker [Anaconda, Linux]
• Run ID: 27991057746
• Commit: d37b1d8
• Branch: main
• Date: 2026-06-22T23:36:19.453Z

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Link Check Summary

• Total broken links: 2
• Total redirects found: 0

Broken Links

_site/pandas.html - 2 broken link(s):
❌ https://fred.stlouisfed.org/ - Status: 0 (Timeout)
Link text: FRED
❌ https://fred.stlouisfed.org/series/UNRATE - Status: 0 (Timeout)
Link text: unemployment rate

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Next Steps:

1. Review the broken links listed above
2. Update or remove broken links from the source files
3. Consider applying AI suggestions for better alternatives
4. Re-run the link check to verify fixes

Note: This issue was automatically created by the AI-Powered Link Checker Action.

Please close this issue once all broken links have been addressed.

[mmcky]

Closing as a duplicate of #587, which carries the same two FRED findings plus one genuine stale link.

Both FRED URLs are false positives: they return 200 in well under a second from a normal network, and the 0 (Timeout) status is FRED throttling GitHub Actions runner IPs. They are already whitelisted for Sphinx in lectures/_config.yml under linkcheck_ignore, but the link checker scans built HTML and never sees that configuration, so it re-reports them every week.

The fix belongs in the action rather than in this repo. Tracked upstream in QuantEcon/action-link-checker#2, which requests an ignore-patterns input plus deduplication so a recurring finding updates one issue instead of opening a new one each week.

The real finding in #587 is fixed in #590.