def _slice(self, slicer):
<EOL>if isinstance(slicer, tuple) and len(slicer) == <NUM_LIT:2>:<EOL><INDENT>if not com.is_null_slice(slicer[<NUM_LIT:0>]):<EOL><INDENT>raise AssertionError("<STR_LIT>"<EOL>"<STR_LIT>")<EOL><DEDENT>slicer = slicer[<NUM_LIT:1>]<EOL><DEDENT>return self.values[slicer]<EOL>
return a slice of my values