pipelines.py 文件源码

def spider_closed(self, spider):
        # Add feed header(s) at the end so they can be dynamic.
        for feed_header in iterate_spider_output(spider.feed_headers()):
            self._exporters[spider].export_item(feed_header)
        self._exporters[spider].finish_exporting()
        self._exporters.pop(spider)