ImportError: cannot import name xx (scrapy爬蟲之xx_spider.py和xxItem.py檔案中import出錯的問題)

問題描述：

ImportError：“ImportError: cannot import name jianshuItem”

[[email protected] jianshu]# scrapy crawl jianshu
Traceback (most recent call last):
  File "/usr/bin/scrapy", line 11, in <module>
    sys.exit(execute())
  File "/usr/lib64/python2.7/site-packages/scrapy/cmdline.py", line 149, in execute
    cmd.crawler_process = CrawlerProcess(settings)
  File "/usr/lib64/python2.7/site-packages/scrapy/crawler.py", line 249, in __init__
    super(CrawlerProcess, self).__init__(settings)
  File "/usr/lib64/python2.7/site-packages/scrapy/crawler.py", line 137, in __init__
    self.spider_loader = _get_spider_loader(settings)
  File "/usr/lib64/python2.7/site-packages/scrapy/crawler.py", line 336, in _get_spider_loader
    return loader_cls.from_settings(settings.frozencopy())
  File "/usr/lib64/python2.7/site-packages/scrapy/spiderloader.py", line 61, in from_settings
    return cls(settings)
  File "/usr/lib64/python2.7/site-packages/scrapy/spiderloader.py", line 25, in __init__
    self._load_all_spiders()
  File "/usr/lib64/python2.7/site-packages/scrapy/spiderloader.py", line 47, in _load_all_spiders
    for module in walk_modules(name):
  File "/usr/lib64/python2.7/site-packages/scrapy/utils/misc.py", line 71, in walk_modules
    submod = import_module(fullpath)
  File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/BS/scrapy/jianshu/jianshu/spiders/jianshu_Spider.py", line 2, in <module>
    from jianshu.items import jianshuItem
ImportError: cannot import name jianshuItem
           

 解決問題，過程如下：

[[email protected] jianshu]# cat items.py
# -*- coding: utf-8 -*-

# Define here the models for your scraped items
#
# See documentation in:
# https://doc.scrapy.org/en/latest/topics/items.html

import scrapy


class JianshuItem(scrapy.Item):
    # define the fields for your item here like:
    title = scrapy.Field()
    url = scrapy.Field()
    author = scrapy.Field()
    readNum = scrapy.Field()
    commentNum = scrapy.Field()
    likeNum = scrapy.Field()
~
~	
"items.py" 18L, 420C written
[[email protected] spiders]# vi jianshu_Spider.py
import scrapy
from jianshu.items import JianshuItem

class jianshu_spider(scrapy.Spider):
        name = 'jianshu'
        allowed_domains = ['www.jianshu.com']
        start_urls = ['http://www.jianshu.com/top/monthly']

        def parse(self , response):
                item = JianshuItem()
                selector = Selector(response)
                selector.xpath('//ul[@class="article-list thumbnails"]/li')
                for article in articles:
                        title = article.xpath('//div/h4/a/text()').extract()
                        url = article.xpath('//div/h4/a/@href').extract()
                        author = article.xpath('//div/p/a/text()').extract()
                item['title'] = title
                item['url'] = url
                item['author'] = author
                yield item

~
~
~
~
~
"jianshu_Spider.py" 21L, 625C written
           

 解決思路：

解決xx_spider.py中的  from   項目名.items   import   item.py中class的名字+Item

如項目名為jianshu，item.py中class名字為Jianshu，則，此處為：from jianshu.items import JianshuItem ,否則将會報出如上錯誤。