code: def _compute(self):
          
          r = self
          for func, args, kwargs in self._todo:
              r = func(self)(*args, **kwargs)
          return r
docs: Execute the style functions built up in `self._todo`.
  
          Relies on the conventions that all style functions go through
          .apply or .applymap. The append styles to apply as tuples of
  
          (application method, *args, **kwargs)