我有产品信息在不同的对象,产品描述和产品亮点。这两个对象都有product_id,所以我可以将它们关联在一起。
decription_items是一个字典列表,例如:
[
{'product_id': '123', 'description': 'desc1', 'price': '$40' },
{'product_id': '124', 'description': 'desc2', 'price': '$50' },
{'product_id': '125', 'description': 'desc3', 'price': '$99' },
] product_highlight_dict是(product_id,ProductHighlight)的字典
{
'123': <product_123_highligh>,
'124': <product_124_highligh>,
'125': <product_125_highligh>,
}最后,ProductHighlight是一个类:
class ProductHighlight:
def __init__(self, product_id, location, area):
self.product_id = product_id
self.location = location
self.area = area我想要做的是合并这两种类型,并将它们写入xml文档,在下面的代码中,我可以合并这两种类型:
for description_item in self.decription_items:
product_id = .get('product_id')
if product_id:
product_highlight = spider.product_highlight_dict.get(product_id)
# I don't know how to combine description_item and
# product_highlight and write them to an xml更新
我使用下面的代码将product_highlight_dict写成xml。我不知道如何在下面的逻辑中包含description_item?
highlights = []
for k in self.product_highlight_dict:
highlights.append(vars(self.product_highlight_dict[k]))
xml = dicttoxml.dicttoxml(highlights, custom_root='product_highlights')
file = open('filename', "wb")
file.write(xml)
file.close()发布于 2020-07-14 17:43:01
您可以使用description_items为每个产品构建一个包含description和price信息的字典:
product_data = {}
for description_item in description_items:
product_id = description_item["product_id"]
product_data[product_id] = description_item然后,您可以在代码中使用它,如下所示
highlights = []
for product_id, product_highlight in self.product_highlight_dict.items():
highlight = vars(product_highlight)
if product_id in product_data:
highlight.update(product_data[product_id])
highlights.append(highlight)https://stackoverflow.com/questions/62890851
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