odoo/addons/purchase/purchase_stock_demo.yml

-
  !python {model: stock.warehouse}: |
    pull_obj = self.pool.get('procurement.rule')
    wh_to_assign = ['stock_warehouse_shop0','stock_warehouse_shop1','warehouse_icecream']
    for wh_ref in wh_to_assign:
      warehouse = self.browse(cr, uid, ref('stock.' + wh_ref), context=context)
      #Force the rewriting of route and rule
      self.write(cr,uid,warehouse.id,{'can_buy_for_resupply':True},context=context)