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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 _github_create_simple_authorization(cls):
 """Create a GitHub authorization for the given user in case they don't already have one. """

        try:
            auth = None
            for a in cls._user.get_authorizations():
                if a.note == 'DevAssistant':
                    auth = a
            if not auth:
                auth = cls._user.create_authorization(
                    scopes=['repo', 'user', 'admin:public_key'],
                    note="DevAssistant")
                cls._github_store_authorization(cls._user, auth)
        except cls._gh_exceptions.GithubException as e:
            logger.warning('Creating authorization failed: {0}'.format(e))