从python scrapy中的多个urls中提取标题

import scrapy

class MySpider(scrapy.Spider):
    name = 'my_spider'
    start_urls = ['http://example.com/page1', 'http://example.com/page2', 'http://example.com/page3']

    def parse(self, response):
        # 使用XPath选择器提取标题元素
        titles = response.xpath('//h1/text()').extract()

        # 打印提取到的标题
        for title in titles:
            print(title)

        # 或者保存到文件中
        with open('titles.txt', 'a') as f:
            for title in titles:
                f.write(title + '\n')