def has_css_class(self, selector, klass):
        return (self.selenium.find_element_by_css_selector(selector)
                .get_attribute('class').find(klass) != -1)
Returns sum(x * y), where '*' is the pointwise product, computed
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/contrib/admin/tests.py/AdminSeleniumWebDriverTestCase.has_css_class--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/regression/mixed_linear_model.py/_dotsum