def setPreserveAspectRatio(self, preserve):
        self._preserve_aspect_ratio = preserve
        self.update()
Return the list of keys as strings represented by this RowProxy.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/qt/qt_image_view.py/QImageView.setPreserveAspectRatio--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/engine/result.py/RowProxy.keys