Scrapy ImagesPipeline类无法执行。

Question

scrapy爬取网页图片时，在pipelines文件中自定义了继承ImagesPipelines的类，
但是运行程序后无法执行自定义的pipelines。item无法传递

以下是自定义的pipelines

class Douyu3Pipeline(ImagesPipeline):
    # def process_item(self, item, spider):
    #     return item

    IMAGES_STORE = get_project_settings().get("IMAGE_STORE")

    def get_media_requests(self, item, info):
        print("1---------------------------1")
        image_url = item["imagelink"]
        yield scrapy.Request(image_url)

    def item_completed(self, results, item, info):
        image_path = [x["path"] for ok, x in results if ok]
        os.rename(self.IMAGES_STORE + "/" + image_path[0],
                  self.IMAGES_STORE + "/" + item["nickname"] + ".jpg")
        item['imagePath'] = self.IMAGES_STORE + '/' + item['nickname']
        return item

settings 文件设置如下：

BOT_NAME = 'douyu3'

SPIDER_MODULES = ['douyu3.spiders']
NEWSPIDER_MODULE = 'douyu3.spiders'


ROBOTSTXT_OBEY = True


# Override the default request headers:
DEFAULT_REQUEST_HEADERS = {
    'User-Agent': 'DYZB/1 CFNetwork/808.2.16 Darwin/16.3.0',
}


ITEM_PIPELINES = {
   'douyu3.pipelines.Douyu3Pipeline': 300,
}

IMAGE_STORE = "/Users/enritami/desktop/SearchEngineer/douyu3/Images"

打印异常如下：

异常是：Enable item pipelines:[] 自定义的pipelines无法添加进pipe列表

Answer 1

已经解决了，如果要继承ImagesPipeline ，settings文件中的IMAGE_STORE 必须写成IMAGES_STORE

Answer 2

你是不是没有import