import json

 import codecs

 # Define your item pipelines here

 #

 # Don't forget to add your pipeline to the ITEM_PIPELINES setting

 # See: http://doc.scrapy.org/en/latest/topics/item-pipeline.html

 class PandaPipeline(object):

     def __init__(self):

         self.file = codecs.open('pandaow.json', 'w', encoding='utf-8')

     def process_item(self, item, spider):

         line = json.dumps(dict(item),ensure_ascii=False) + '\n'

         # print line

         # self.file.write(line.decode("unicode_escape"))

         self.file.write(line)

         return item

     def spider_closed(self, spider):

         self.file.close()

ITEM_PIPELINES = {

    'panda.pipelines.PandaPipeline': 300

}