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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 trends_available(self):
 """ Returns a list of regions for which Twitter tracks trends. """

        url = 'https://api.twitter.com/1.1/trends/available.json'
        try:
            resp = self.get(url)
        except requests.exceptions.HTTPError as e:
            raise e
        return resp.json()