网页抓取Python-电子邮件ID

Question

我正在使用以下使用scrapy的代码从craigslist抓取标题，地址等信息。

import scrapy
from scrapy import Request

class JobsSpider(scrapy.Spider):
    name = "jobsall"
    allowed_domains = ["craigslist.org"]
    start_urls = ["https://chennai.craigslist.co.in/d/parking-storage/search/prk"]

    def parse(self, response):
        jobs = response.xpath('//p[@class="result-info"]')

        for job in jobs:
            relative_url = job.xpath('a/@href').extract_first()
            absolute_url = response.urljoin(relative_url)
            title = job.xpath('a/text()').extract_first()
            address = job.xpath('span[@class="result-meta"]/span[@class="result-hood"]/text()').extract_first("")[2:-1]

            yield{'URL':absolute_url, 'Title':title, 'Address':address}

        relative_next_url = response.xpath('//a[@class="button next"]/@href').extract_first()
        absolute_next_url = response.urljoin(relative_next_url)
        yield Request(absolute_next_url, callback=self.parse)

如何抓取海报的电子邮件ID？