fixes issue 1980
fixes issue 1980

pyflaked the module, at least a bit. Sometimes I feel developers are in a contest
where less characters and lines win. Concise implementation wins over verbose one,
but less SLOC DON'T mean somewhat better code. Just reading through
this module makes my brain hurt a bit

stephenrauch/pydal,manuelep/pydal,willimoa/pydal,niphlod/pydal,web2py/pydal,michele-comitini/pydal,kmcheung12/pydal