def __init__(self):
        super(TestWtdTweedieLog, self).__init__()
        family_link = sm.families.Tweedie(var_power=1, link_power=0)
        self.res1 = GLM(self.endog, self.exog,
                        freq_weights=self.weight,
                        family=family_link).fit()
        self.res2 = GLM(self.endog_big, self.exog_big,
                        family=family_link).fit()
Tests Gamma family with log link.
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/genmod/tests/test_glm.py/TestWtdTweedieLog.__init__