def getleftpixel(self, cellx, onscreen=True):
        if onscreen and (cellx < 0 or cellx >= self.width):
            return None
        return cellx * self._cellwidth
Test keypair delete command.
dataset/ETHPy150Open asweigart/pygcurse/pygcurse/__init__.py/PygcurseSurface.getleftpixel--crossover with--dataset/ETHPy150Open dtroyer/python-openstackclient/functional/tests/compute/v2/test_keypair.py/KeypairTests.test_keypair_delete