Question

from scrapy import project, signals
from scrapy.crawler import Settings
from scrapy.crawler import CrawlerProcess
from scrapy.xlib.pydispatch import dispatcher
from multiprocessing.queues import Queue
import multiprocessing

class CrawlerWorker(multiprocessing.Process):

    def __init__(self, spider, result_queue):
        multiprocessing.Process.__init__(self)
        self.result_queue = result_queue

        self.crawler = Crawler(Settings())
        if not hasattr(project, 'crawler'):
            self.crawler.install()
        self.crawler.configure()

        self.items = []
        self.spider = spider
        dispatcher.connect(self._item_passed, signals.item_passed)

    def _item_passed(self, item):
        self.items.append(item)

    def run(self):
        self.crawler.crawl(self.spider)
        self.crawler.start()
        self.crawler.stop()
        self.result_queue.put(self.items)

我在尝试使用scrapy.conf.settings中的CrawlerProcess（设置）时遇到错误，似乎scrapy doc在这里说的http://doc.scrapy.org/en/latest/topics/practices.html

之间存在差异

我正在关注一个较旧的scrapy版本，我试图让它与0.16的scrapy一起使用。

一旦运行python脚本，这就是错误。

Traceback (most recent call last):
  File "server.py", line 5, in <module>
    from scraper import Scraper
  File "/home/me/spider/spider/scraper.py", line 6, in <module>
    from crawlerworker import CrawlerWorker
  File "/home/me/spider/spider/crawlerworker.py", line 2, in <module>
    from scrapy.crawler import Settings
ImportError: cannot import name Settings

Answer 1

尝试：

from scrapy.settings import Settings

Scrapy：ImportError：无法导入名称设置

1 个答案: