On 2018-02-17 11:23, fhsxfhsx wrote: > [ > { > 'id': goods.id, > 'name': goods.name, > 'category': gc.name, > 'category_type': gc.type, > } > for goods_id in goods_id_list > for goods is Goods.get_by_id(goods_id) > for gc is GoodsCategory.get_by_id(goods.category_id) > ]
in the short term, it seems for...in [...] is good enough: > [ > { > 'id': goods.id, > 'name': goods.name, > 'category': gc.name, > 'category_type': gc.type, > } > for goods_id in goods_id_list > for goods in [Goods.get_by_id(goods_id)] > for gc in [GoodsCategory.get_by_id(goods.category_id)] > ] I personally would like to see with...as... syntax allowed in list comprehensions, despite `with` being limited to context managers to date. > [ > { > 'id': goods.id, > 'name': goods.name, > 'category': gc.name, > 'category_type': gc.type, > } > for goods_id in goods_id_list > with Goods.get_by_id(goods_id) as goods > with GoodsCategory.get_by_id(goods.category_id) as gc > ] ..,or maybe `let` reads easier? > [ > { > 'id': goods.id, > 'name': goods.name, > 'category': gc.name, > 'category_type': gc.type, > } > for goods_id in goods_id_list > let goods = Goods.get_by_id(goods_id) > let gc = GoodsCategory.get_by_id(goods.category_id) > ]
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