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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 _load_meta_cache(self):
 """ Try to load metadata from file. """

        try:
            if self._should_invalidate_cache():
                os.remove(self._cache_filename)
            else:
                with open(self._cache_filename, 'rb') as f:
                    self._document_meta = compat.pickle.load(f)
        except (OSError, IOError, compat.pickle.PickleError,
                ImportError, AttributeError):
            pass