Split settings into a base file and environment-specific files so configuration is clean, environment variables are explicit, and nothing leaks between environments.
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Replace verbose try/except/pass patterns with contextlib.suppress to make intentional exception suppression readable and precise.
Design management commands that can be safely re-run in any environment without creating duplicates, side effects, or partial database state.
Implement Django's clean() method to validate business rules at the ORM layer so invalid data is rejected regardless of how the model is saved.