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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 check_backend() -> bool: """Check if the backend is available."""

        try:
            import bluepy.btle  # noqa: F401 #pylint: disable=unused-import
            return True
        except ImportError as importerror:
            _LOGGER.error('bluepy not found: %s', str(importerror))
        return False