Pluck# class kingfisher_scrapy.extensions.pluck.Pluck(directory, max_bytes)[source]# Appends one data value from one plucked item to a file. See the pluck command. classmethod from_crawler(crawler)[source]# bytes_received(data, request, spider)[source]# item_scraped(item, spider)[source]# spider_closed(spider, reason)[source]#