def blob_to_file(filename_hint_propertyname=None, directory_hint=''):
 directory = []
 def transform_function(value, bulkload_state):
  if (not directory):
   parent_dir = os.path.dirname(bulkload_state.filename)
   directory.append(os.path.join(parent_dir, directory_hint))
   if (directory[0] and (not os.path.exists(directory[0]))):
    os.makedirs(directory[0])
  filename_hint = 'blob_'
  suffix = ''
  filename = ''
  if filename_hint_propertyname:
   filename_hint = bulkload_state.current_entity[filename_hint_propertyname]
   filename = os.path.join(directory[0], filename_hint)
   if os.path.exists(filename):
    filename = ''
    (filename_hint, suffix) = os.path.splitext(filename_hint)
  if (not filename):
   filename = tempfile.mktemp(suffix, filename_hint, directory[0])
  f = open(filename, 'wb')
  f.write(value)
  f.close()
  return filename
 return transform_function

def blob_to_file ( filename_hint_propertyname = None , directory_hint = '' ) : directory = [ ] def transform_function ( value , bulkload_state ) : if ( not directory ) : parent_dir = os . path . dirname ( bulkload_state . filename ) directory . append ( os . path . join ( parent_dir , directory_hint ) ) if ( directory [ 0 ] and ( not os . path . exists ( directory [ 0 ] ) ) ) : os . makedirs ( directory [ 0 ] ) filename_hint = 'blob_' suffix = '' filename = '' if filename_hint_propertyname : filename_hint = bulkload_state . current_entity [ filename_hint_propertyname ] filename = os . path . join ( directory [ 0 ] , filename_hint ) if os . path . exists ( filename ) : filename = '' ( filename_hint , suffix ) = os . path . splitext ( filename_hint ) if ( not filename ) : filename = tempfile . mktemp ( suffix , filename_hint , directory [ 0 ] ) f = open ( filename , 'wb' ) f . write ( value ) f . close ( ) return filename return transform_function
write the blob contents to a file .