'Changes the weight of the problem, which should not affect
persisted grades.'

def _change_weight_for_problem(self):

    (unit, component) = self._get_problem_in_studio()
    component.edit()
    component_editor = XBlockEditorView(self.browser, component.locator)
    component_editor.set_field_value_and_save('Problem    Weight', 5)
    unit.publish()
