The exception handling for updating the parent entity with a new relationship is problematic. It catches a broad Exception, prints a warning, and then continues. This can leave the database in an inconsistent state where a category entity is created but not linked to its parent (it becomes an orphan). This could cause issues later.
For a more robust script, you should consider either:
- Failing the script immediately by re-raising the exception (raise).
- Implementing a cleanup mechanism to delete the newly created category if the relationship cannot be established.
Silently continuing is risky.