# -*- coding: utf-8 -*-# Define your item pipelines here## Don't forget to add your pipeline to the ITEM_PIPELINES setting# See: https://doc.scrapy.org/en/latest/topics/item-pipeline.htmlimport jsonclass ItteachersPipeline(object):    def __init__(self):        self.filename = open("teacher.json","w")    def process_item(self, item, spider):        jsontext = json.dumps(dict(item), ensure_ascii = False) + "\n"        self.filename.write(jsontext.encode("utf-8"))        return item    def close_spider(self, spider):        self.filename.close()