使用 Scrapy 时，如何将返回值按特定顺序排列？

Question

我有一个可以正常工作的刮刀，可以轻松地将其放入 CSV 文件，但它总是以奇怪的顺序返回值。

我检查以确保 items.py 字段的顺序正确，并尝试在蜘蛛中移动字段，但我无法弄清楚为什么它会以一种奇怪的方式产生它们。

import scrapy
from scrapy.spiders import CrawlSpider
from scrapy import Selector
from scrapy.loader import ItemLoader
from scrapy.spiders import Rule
from scrapy.linkextractors import LinkExtractor
from sofifa_scraper.items import Player


class FifaInfoScraper(scrapy.Spider):
    name = "player2_scraper"
    start_urls = ["https://www.futhead.com/19/players/?level=all_nif&bin_platform=ps"]


    def parse(self,response):
        for href in response.css("li.list-group-item > div.content > a::attr(href)"):
            yield response.follow(href, callback = self.parse_name)



    def parse_name(self,response):
        item = Player()

        item['name'] = response.css("div[itemprop = 'child'] > span[itemprop = 'title']::text").get() #Get player name

        club_league_nation = response.css("div.col-xs-5 > a::text").getall()    #club, league, nation are all stored under same selectors, so pull them all at once

        item['club'],item['league'],item['nation'] = club_league_nation         #split the selected info from club_league_nation into 3 seperate categories
        yield item

我希望爬虫在第一列中返回玩家姓名，并且不太关心之后的顺序。不过，玩家名称总是在另一列中结束，并且当我只提取名称和另一个值时也会发生这种情况。

Answer 1

只需在您的settings.py (documentation) 中添加FEED_EXPORT_FIELDS：

FEED_EXPORT_FIELDS = ["name", "club", "league", "nation"]