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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 export_task(self, img, cont):
 """ Creates a task to export the specified image to the swift container named in the 'cont' parameter. If the container does not exist, a NoSuchContainer exception is raised. The 'img' parameter can be either an Image object or the ID of an image. If these do not correspond to a valid image, a NotFound exception is raised. """

        return self._tasks_manager.create("export", img=img, cont=cont)