Some cases couldn't be found in the default db

[Loose-Gu]

assert results is not None and len(results)==1, f"topic in your data ({title}) is likely to be not a valid title in the DB."

It seems that Francisco Urroz (unlabeled) will cause the error. I use the default file enwiki-20230401.db and manually query the db about this topic. But it returns nothing.

[skychwang]

Had the same problem; seems like spaces in topic titles cause the error. Not entirely sure of a better fix—my workaround was just to make a custom db with spaces in titles removed.

[Loose-Gu]

@skychwang I solved it by adding a wildcard (*) to the query statement, which maybe more convenient.