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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def save_image(self, file_obj):
 """ Save the current color buffer to a file object in PNG format. Parameters file_obj: file name, or file- like object """

        manager = pyglet.image.get_buffer_manager()
        colorbuffer = manager.get_color_buffer()

        # if passed a string save by name
        if hasattr(file_obj, 'write'):
            colorbuffer.save(file=file_obj)
        else:
            colorbuffer.save(filename=file_obj)