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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 _ffi_module(self):
 """Load the native engine as a python module and register CFFI externs."""

    native_bin_dir = os.path.dirname(self.binary)
    logger.debug('loading native engine python module from: %s', native_bin_dir)
    sys.path.insert(0, native_bin_dir)
    return importlib.import_module(NATIVE_ENGINE_MODULE)