Question

我的craigscrap / extension.py是这样的：

from scrapy import signals
from scrapy.exceptions import NotConfigured

class SendEmail(object):

    def __init__(self):
        self.frm = 'wrufesh@gmail.com'
        self.to = 'a@f.com, b@g.com'

    @classmethod
    def from_crawler(cls, crawler):
        if not crawler.settings.getbool('MYEXT_ENABLED'):
            raise NotConfigured
        ext = cls()
        crawler.signals.connect(ext.send_mail, signal=signals.spider_closed)
        return ext

    def send_mail(self, spider):
        spider.log("Are you getting the message?")

我的设置是这样的：

EXTENSIONS = {
    'craigscrap.extension.SendEmail': 80,
}

我正在阅读文档以表示扩展。我为扩展编写了这段代码，但它似乎没有运行。正如我希望这段代码打印

"Are you getting the message?"

当蜘蛛关闭时

请帮助我找到我的错误。

Answer 1

我发现了自己的错误。在settings.py中添加以下变量

MYEXT_ENABLED = True    

EXTENSIONS = {
'craigscrap.extension.SendEmail': 80,
}

无法在python scrapy中运行扩展

1 个答案: