@property
    def cov(self):
        if self.df <= 2:
            return np.nan * np.ones_like(self.sigma)
        else:
            return self.df / (self.df - 2.) * self.sigma
The initialize method should generate the proper directories
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/sandbox/distributions/mv_normal.py/MVT.cov--crossover with--dataset/ETHPy150Open toumorokoshi/sprinter/tests/core/test_directory.py/TestDirectory.test_initialize