In several forms I have fields like to one below

Field('the_file'    , 'upload' , label=T('Audio File *'), 
                                         default = False,
                                        
 uploadfolder=os.path.join(request.folder,'uploads/resources/audio')
                                         ),


When I delete the db record containing the result of processing the field 
above, I also want to delete the actual uploaded file.

If I "print"  db.audios.the_file I get a sensible file name, e.g. 
"audios.the_file.87f39e4b2eac56a2.7331343035323830332e706466.mp3"
but -  if I pass db.audios.the_file to os.path.join, I get an exception - 
"EXCEPTION 
= join() argument must be str or bytes, not 'Field'"
and  - if I pass str(db.audios.the_file) to os.path.join I end up with 
something ending in 'uploads/resources/audio/the_file'

Simple question. How do I get the name of the uploaded file in a form I can 
use in os.path.join

Thanks

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