def gettopleftpixel(self, cellx, celly=None, onscreen=True):
        if type(cellx) in (tuple, list):
            if type(celly) == bool: # shuffling around the parameters
                onscreen = celly
            cellx, celly = cellx
        if onscreen and not self.isonscreen(cellx, celly):
            return (None, None)
        return (cellx * self._cellwidth, celly * self._cellheight)
Using virtual-burrito, create a new Python virtualenv named ``venv_name``.
dataset/ETHPy150Open asweigart/pygcurse/pygcurse/__init__.py/PygcurseSurface.gettopleftpixel--crossover with--dataset/ETHPy150Open chapmanb/cloudbiolinux/cloudbio/custom/shared.py/_create_python_virtualenv