docs: def hash_file(f):
          '''
          Utility function for hashing file contents
  
          Overload this function to change the file equality checking algorithm
  
          Parameters
          ----------
  
          f: file-like
              File-like object or file path from which to compute checksum value
  
  
          Returns
          -------
          checksum: dict
              dictionary with {'algorithm': 'md5', 'checksum': hexdigest}
  
          '''
  
          md5 = hashlib.md5()
  
          with open_filelike(f, 'rb') as f_obj:
              for chunk in iter(lambda: f_obj.read(128 * md5.block_size), b''):
                  md5.update(chunk)
  
          return {'algorithm': 'md5', 'checksum': md5.hexdigest()}