def hasRenderer(self):
        return (self.getRenderer() != None)
we have n indexable columns, with an arbitrary number of data
dataset/ETHPy150Open pybrain/pybrain/pybrain/rl/environments/graphical.py/GraphicalEnvironment.hasRenderer--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/io/pytables.py/LegacyTable.read