<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _split_raw(self):
 """Split hand history by sections."""


        self._splitted = self._split_re.split(self.raw)
        # search split locations (basically empty strings)
        self._sections = [ind for ind, elem in enumerate(self._splitted) if not elem]