Save many metafields with a single request

There does not seem to be a way to attach metafields locally, and then simply save the product with the metafields along with it. I'm forced to use add_metafields() or Metafield().save(), both of which adds a single metafield per API call. This is very slow.

If I take a product with 50 metafields, and save it as a new product, it saves almost instantly, like so:

p = shopify.Product.find()[0]
print len(p.metafields())
> 50
p.id = None
p.images = None
p.save()

How can I attach metafields to a product in the same way they are attached when they are fetched?

Empieza rastreando Product.save(), add_metafields() y Metafield().save() para entender cómo se representan y persisten los metafields obtenidos. El trabajo estará terminado cuando los metafields adjuntados localmente se puedan guardar con un nuevo producto en una única solicitud de API, con cobertura para el caso reportado de múltiples metafields.