ftplib - issues with some files not completing?

[Peter A. Schott]

Any tips/tricks on how to ensure that I've got the complete file before closing
the local file?  I think my code is basically correct and works more than 99% of
the time, but it still has an occasional issue with an encrypted file where it
doesn't receive the whole file and I can't decrypt it.  Should I checksum the
files somehow or is there a standard trick to ensure I get the complete file?

Thanks in advance.

-Pete Schott