def exempt(self, view):

        view_location = '{0}.{1}'.format(view.__module__, view.__name__)
        self._exempt_views.add(view_location)
        return view
Recode categorial data to int factor.
dataset/ETHPy150Open maxcountryman/flask-seasurf/flask_seasurf.py/SeaSurf.exempt--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/graphics/factorplots.py/_recode