def UnregisterArtifact(self, artifact_name):
    try:
      del self._artifacts[artifact_name]
    except KeyError:
      raise ValueError(artifact_name % "Artifact %s unknown.")
dataset/ETHPy150Open google/grr/grr/lib/artifact_registry.py/ArtifactRegistry.UnregisterArtifact/swapped operands of `%`