def register_models(engine):
 models = (Artifact, ArtifactTag, ArtifactProperty, ArtifactBlob, ArtifactBlobLocation, ArtifactDependency)
 for model in models:
  model.metadata.create_all(engine)

def register_models ( engine ) : models = ( Artifact , ArtifactTag , ArtifactProperty , ArtifactBlob , ArtifactBlobLocation , ArtifactDependency ) for model in models : model . metadata . create_all ( engine )
register models and create metadata .