def pdf(self, x):
        return self.evaluate(x)
Verify DeleteFormset ignores DELETE field and uses form method
dataset/ETHPy150Open scipy/scipy/scipy/stats/kde.py/gaussian_kde.pdf--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.3/tests/regressiontests/model_formsets_regress/tests.py/FormfieldShouldDeleteFormTests.test_custom_delete