I can't solve ... I don't understand it well

Hi,

  if you want to create a delivery order from reception order,just try the following

for order in self:
product_ids = []
for line in order.move_ids_without_package:
    product_ids.append((0, 0,
                      {
                          'name': line.product_id.name,
                          'product_id': line.product_id.id,
                          'product_uom_qty': line.product_qty,
                          'product_uom_id': line.product_id.uom_id.id,
                          'product_uom': line.product_id.uom_id.id,
                          'location_dest_id': destination_location,
                          'location_id': source_location,
                      }))
pick = {
    'picking_type_id': Operation_type,
    'partner_id': Partner,
    'origin': name,
    'location_dest_id': destination_location,
    'location_id': source_location,
    'move_ids_without_package': product_ids
}
self.env['stock.picking'].create(pick)