(self, old, new)
return None
Override this stub if you want to do anything more than
        attempt a replacement of old with new in the arguments of self.

        See also: _subs
Override this stub if you want to do anything more than
        attempt a replacement of old with new in the arguments of self.
Override this stub if you want to do anything more than attempt a replacement of old with new in the arguments of self .
def _eval_subs(self, old, new):
        """Override this stub if you want to do anything more than
        attempt a replacement of old with new in the arguments of self.

        See also: _subs
        """
        return None
def _eval_subs ( self , old , new ) : return None