def main( argv=None ) :
    options,args = opts()
    file_collection = fd.recalc_files()
    recalc.go( file_collection, options.output  )
def main( argv=None ) :
    options,args = opts()
    file_collections = fd.recalc_file_list()
    for fc in file_collections:
        recalc.go( fc, options.output  )