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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 get(self, uid):
 """ Get a user's information by their id. :param uid str: User ID :return: The user's information or None :rtype: Dictionary or None """

        r = requests.get(self.apiurl + "/users/{}".format(uid), headers=self.header)

        if r.status_code != 200:
            raise ServerError

        jsd = r.json()

        if jsd['data']:
            return jsd['data']
        else:
            return None