Nice, but that doesn't work (because the text used by the OP does not constitute a valid genbank record).

It's a snip from a valid genbank record, and it parses beautifully when simply pasted into a full record. The OP said, "I have this part of a file that I want to match..." The "part" is the snip provided. The assignment is pedagogically problematic as it is (IMO), but it would be even worse to require the raw parsing of an incomplete genbank record.