old_contents: 
  import os
  import logging
  from collections import OrderedDict
  
  # Known two-part file extensions
  ALLOWED_EXTS = {'.gz': {'.nii', '.raw', '.mhd'}}
  
  LOG_LEVEL = logging.INFO
  
  # Acceptable extensions for DICOM files
  DICOM_FILE_EXTENSIONS = ['.IMA', '.DICOM', '.DCM']
  DICOM_FILE_EXTENSIONS.extend([x.lower() for x in DICOM_FILE_EXTENSIONS])
  OUTPUT_DICOM_EXTENSION = '.dcm'
  
  # MACUTO-DATA PATH
  TESTDATA_PATH = os.path.join(os.path.dirname(__file__), '..', 'macuto-data')
  
  # DICOM field weights for dicom.comparison
  DICOM_FIELD_WEIGHTS = OrderedDict([('PatientID', 1),
                                     ('PatientName', 1),
                                     ('PatientAddress', 0.5),
                                     ('PatientSex', 0.2),
                                     ('AcquisitionDate', 0.2),
                                     ('PatientBirthDate', 0.3)])
  
new_contents: 
  import os
  import logging
  from collections import OrderedDict
  
  # Known two-part file extensions
  ALLOWED_EXTS = {'.gz': {'.nii'}}
  
  LOG_LEVEL = logging.INFO
  
  # Acceptable extensions for DICOM files
  DICOM_FILE_EXTENSIONS = ['.IMA', '.DICOM', '.DCM']
  DICOM_FILE_EXTENSIONS.extend([x.lower() for x in DICOM_FILE_EXTENSIONS])
  OUTPUT_DICOM_EXTENSION = '.dcm'
  
  # MACUTO-DATA PATH
  TESTDATA_PATH = os.path.join(os.path.dirname(__file__), '..', 'macuto-data')
  
  # DICOM field weights for dicom.comparison
  DICOM_FIELD_WEIGHTS = OrderedDict([('PatientID', 1),
                                     ('PatientName', 1),
                                     ('PatientAddress', 0.5),
                                     ('PatientSex', 0.2),
                                     ('AcquisitionDate', 0.2),
                                     ('PatientBirthDate', 0.3)])
  
subject: remove .mhd.gz from ALLOWED_EXT