def correct_barcode(barcode, barcode_to_sample_id, correction_fn):
 try:
  sample_id = barcode_to_sample_id[barcode]
 except KeyError:
  sample_id = None
 if ((sample_id is not None) or (correction_fn is None) or ('N' in barcode)):
  return (0, barcode, False, sample_id)
 else:
  (corrected_barcode, num_errors) = correction_fn(barcode)
  try:
   sample_id = barcode_to_sample_id[corrected_barcode]
  except KeyError:
   sample_id = None
  return (num_errors, corrected_barcode, True, sample_id)

def correct_barcode ( barcode , barcode_to_sample_id , correction_fn ) : try : sample_id = barcode_to_sample_id [ barcode ] except KeyError : sample_id = None if ( ( sample_id is not None ) or ( correction_fn is None ) or ( 'N' in barcode ) ) : return ( 0 , barcode , False , sample_id ) else : ( corrected_barcode , num_errors ) = correction_fn ( barcode ) try : sample_id = barcode_to_sample_id [ corrected_barcode ] except KeyError : sample_id = None return ( num_errors , corrected_barcode , True , sample_id )
correct barcode given barcode .