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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_info(cls):
 """Return information about backend and its availability. :return: A BackendInfo tuple if the import worked, none otherwise. """

        mod = try_import(cls.mod_name)
        if not mod:
            return None
        version = getattr(mod, '__version__', None) or getattr(mod, 'version',
                                                               None)
        return BackendInfo(version or 'deprecated', '')