scrapy代码运行成功却没有保存到文件中

Question

#**_ scrapy代码运行成功却没有保存到文件中_**

代码：

 #encoding:utf-8
#!/user/bin/python


from scrapy.spider import Spider  
from scrapy.selector import Selector  

class DmozSpider(Spider):  
    name = "dmoz"  
    allowed_domains = ["dmoz.org"]  
    start_urls = [  
        "http://tieba.baidu.com/f?kw=python3&ie=utf-8&pn=50",  
        #"http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/"  
    ]  

    def parse(self, response):  
        sel = Selector(response)  
        sites = sel.xpath('.//a[@title]/text()').extract()   
        for i in sites:
            print ('提示 这是title 提示 这是title 提示 这是title',i)

        yield items     

上面的代码出现了如下错误

把

yield items  

改为 yield sites
时，没有报错 但是 123.json文件是空的

Answer 1

https://blog.csdn.net/zhang_gy2333/article/details/78539760