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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def applymap(self, func, subset=None, **kwargs):
 """ Apply a function elementwise, updating the HTML representation with the result. Parameters func : function ``func`` should take a scalar and return a scalar subset : IndexSlice a valid indexer to limit ``data`` to *before* applying the function. Consider using a pandas.IndexSlice kwargs : dict pass along to ``func`` Returns ------- self : Styler See Also -------- Styler.where """

        self._todo.append((lambda instance: getattr(instance, '_applymap'),
                           (func, subset), kwargs))
        return self