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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 _action(self, res):
 """Returns JSON response or raise exception if errors are present"""

        try:
            j = res.json()
        except:
            res.raise_for_status()
            j = {}

        if 'Retry-After' in res.headers:
            raise HTTPError('403 Forbidden: API rate-limit has been reached until {}.'
                            'See http://freshdesk.com/api#ratelimit'.format(res.headers['Retry-After']))

        if 'require_login' in j:
            raise HTTPError('403 Forbidden: API key is incorrect for this domain')

        if 'error' in j:
            raise HTTPError('{}: {}'.format(j.get('description'),
                                            j.get('errors')))

        # Catch any other errors
        try:
            res.raise_for_status()
        except Exception as e:
            raise HTTPError("{}: {}".format(e, j))

        return j