def load(self):
        if os.path.exists(self.path):
            with open(self.path, 'r') as f:
                self.body_labels = collections.OrderedDict(json.load(f))
def test_impl(n):
            df = pd.DataFrame({'A': np.arange(0, n, 1, np.float32)})
            df.A[0:100] = np.nan
            df.A[200:331] = np.nan
            return df.A.quantile(.25)