Claude finished @marcoacierno's task in 3m 22s —— View job • claude/issue-4811-20260818-1336 • Create PR ➔

Delete `import_old_db.py`

Gather context / locate the script
Understand the request
Delete the script (and the now-empty importer app)
Remove importer from INSTALLED_APPS
Run backend checks (ruff, mypy, pytest)
Commit & push

What changed

Deleted backend/importer/management/commands/import_old_db.py — the one-shot importer for the old PyCon Site SQLite DB (p3.db). It was already dead code: it imports models from apps that no longer exist (orders, tickets, languages, conferences.TicketFare, …).

It was the only content of the importer app, so I removed the whole app directory (backend/importer/, which was just that command plus an empty __init__.py) and dropped its "importer" entry from INSTALLED_APPS in backend/pycon/settings/base.py:104. The app had no models and no migrations, so nothing else was affected. No other references to import_old_db, importer, or p3.db exist in the repo.

Verification

Full backend suite passes:

1343 passed, 16 skipped, 3 xfailed, 681 warnings in 74.78s (0:01:14)

Lint/type checks are unchanged from the pre-existing baseline on this branch (I measured both with and without the change):

check	before	after
`ruff check`	1 error (`sponsors/tests/test_tasks.py:1:27 F401`)	same 1 error
`ruff format --check`	20 files would be reformatted	19 files (the deleted script was one of them)
`mypy .`	3 errors (`badge_scanner/models.py` duplicate module, etc.)	same 3 errors

All three pre-existing failures are in files untouched by this change; I left them alone.

• Branch: claude/issue-4811-20260818-1336