Scrpay ImportError: cannot import name Request

Question

我在这个论坛上看到过类似的问题，但这与那些不同

我有这样的商品 class ...

class NewCarItem(Item):
    car_petrol_engine_type = Item()
    car_petrol_engine_size = Item()
    car_petrol_engine_max_power = Item()
    car_petrol_engine_max_torque = Item()
    car_petrol_engine_fuel_supply_system = Item()

    car_diesel_engine_type = Item()
    car_diesel_engine_size = Item()
    car_diesel_engine_max_power = Item()
    car_diesel_engine_max_torque = Item()
    car_diesel_engine_fuel_supply_system = Item()

    car_transmission_type = Item()

    car_suspension_front = Item()
    car_suspension_rear = Item()

    car_dimension_overall_length_width_height = Item()
    car_dimension_wheel = Item()
    car_dimension_fuel_tank_capacity = Item()
    car_dimension_turning_circle_radius = Item()
    car_dimension_boot_space = Item()
    car_dimension_tyre = Item()

    car_tyre_is_tube_less = Item()

我的蜘蛛class像这样

from scrapy import Request
from scrapy.selector import HtmlXPathSelector
from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor
from scrapy.contrib.spiders import CrawlSpider, Rule
from car_planet.items import NewCarItem
from car_planet.lib.html_utils import *

class NewCarSpiderSpider(CrawlSpider):
    name = 'new_car_spider'
    allowed_domains = ['toyotabharat.com']
    start_urls = ['http://www.toyotabharat.com/cars/new_cars/']

    rules = (
        Rule(SgmlLinkExtractor(allow=r'Items/'), callback='parse_item', follow=True),
    )

    def parse(self, response):
        hxs = HtmlXPathSelector(response)
        urls = hxs.select("//div[@id='sr-img']/a/@href").extract()
        items = []
        for url in urls:
            formed_url = "http://www.toyotabharat.com"+get_matched_strings("^(.*[\/])",url)[0]+"spec_org.aspx"
            yield  Request(formed_url,callback=self.parse_level_one)

    def parse_level_one(self,response):
        hxs = HtmlXPathSelector(response)
        meta_tags = hxs.select("//meta").extract()
        item = NewCarItem()
        item['url'] = response.url
        return item

当我尝试运行蜘蛛时
爬行 new_car_spider 这个命令我得到这样的错误

from scrapy import Request
ImportError: cannot import name Request

Answer 1

看起来像是某种配置错误。可能的原因：

软件包未安装；
不在PYTHONPATH下，所以python就是找不到；
前一点的子集 - 您安装了多个 python 版本，并且此库不适用于当前版本（例如，您只安装了 python 3，并且尝试通过 python 导入 2)
等

您可以做什么来调试此问题 - 只需 import sys; print sys.path 并检查您尝试导入的库文件是否在该路径下可用。

Answer 2

您从错误的地方导入请求。它位于 scrapy.http。像这样更改您的导入：

from scrapy.http import Request

Scrpay ImportError: cannot import name Request

Scrpay ImportError: cannot import name Request

scrapy

python-2.7