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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 list(self, list_id):
 """ Retrieve the list given for the user. """


        r = requests.get(
            "https://kippt.com/api/users/%s/lists/%s" % (self.id, list_id),
            headers=self.kippt.header
        )
        return (r.json())