win10 下python里面scrapy无法调用重写的ImagesPipeline方法，Linux下运行一切正常

#pipelines代码

# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html


# useful for handling different item types with a single interface
import scrapy
from scrapy.pipelines.images import ImagesPipeline

class SoimgPipeline(ImagesPipeline):
    #重写，将图片连接交给调度器
    def get_media_requests(self, item, info):
        print(item['img_url'])
        yield scrapy.Request(url=item['img_url'],meta={'item':item})
    def file_path(self, request, response=None, info=None, *, item=None):
        title=request.meta['item']['title']
        label=request.meta['item']['label']
        # return f'{label}/{title}.jpg'

        return f'{title}.jpg'
```python

    def item_completed(self, results, item, info):
        # 图片下载完成后，返回的结果results
        print(results)
        return item

#settings
ITEM_PIPELINES = {
   'SoImg.pipelines.SoimgPipeline': 300,
}
#指定图片保存路径
IMAGES_STORE='.\images'

管道可以调用，但是重写的方法不行

要加

def __init__