python - Scrapy 未获取日期作为项目参数

Question

我有这段代码，我想添加当前日期作为项目参数，我在网上找到了不同的解决方案，但我不断收到 TypeError: 'str' object is not callable 或 TypeError: 'ItemMeta' object does不支持项目分配

我的代码是这样的:

datascrape = time.strftime("%d/%m/%Y") #also tried str(datetime.datetime.today())
item['dataoggi'] = datascrape() #i tried also datascrape without ()

我如何获取抓取日期作为项目参数？

更新的代码:

from bot.items import botitem
import time

class NetbotSpider(scrapy.Spider):
    name = "netbot"
    allowed_domains = ["example.com"]
    start_urls = (
        'http://example.com'
    )

    def parse(self, response):

        stati = response.xpath('/html/body//div/table/tbody//tr//td//img//@title').extract()
        numeri = response.xpath('/html/body//div/table/tbody//tr[2]//td/text()').extract()
        for i in range(1, len(stati)):
            item = botitem()
            datascrape = time.strftime("%d/%m/%Y")
            botitem['dataoggi'] = datascrape
            botitem['state'] = stati[i]
            botitem['number'] = numeri[i]

        print botitem

Answer 1

TypeError: 'str' object is not callable

您不应该调用datascrape - 它是一个字符串:

item['dataoggi'] = datascrape

TypeError: 'ItemMeta' object does not support item assignment

这意味着您正在尝试将字段添加到 Item 类，而不是实例。替换:

item = botitem()
datascrape = time.strftime("%d/%m/%Y")
botitem['dataoggi'] = datascrape
botitem['state'] = stati[i]
botitem['number'] = numeri[i]

与:

item = botitem()
datascrape = time.strftime("%d/%m/%Y")
item['dataoggi'] = datascrape
item['state'] = stati[i]
item['number'] = numeri[i]