def as_data(self):
        """If obj[%data_key_name] exists, Return obj[%data_key_name] otherwise
        base64 encoded string of obj[%file_key_name] file content."""
        use_file_if_no_data = not self._data and self._file
        if use_file_if_no_data:
            with open(self._file) as f:
                if self._base64_file_content:
                    self._data = bytes.decode(
                        base64.standard_b64encode(str.encode(f.read())))
                else:
                    self._data = f.read()
        return self._data
def as_data ( self ) : use_file_if_no_data = not self . _data and self . _file if use_file_if_no_data : with open ( self . _file ) as f : if self . _base64_file_content : self . _data = bytes . decode ( base64 . standard_b64encode ( str . encode ( f . read ( ) ) ) ) else : self . _data = f . read ( ) return self . _data
If obj[%data_key_name] exists, Return obj[%data_key_name] otherwise
        base64 encoded string of obj[%file_key_name] file content.