【发布时间】:2015-03-26 10:18:13
【问题描述】:
我一直在通过以下链接学习如何使用 Scrapy:
http://doc.scrapy.org/en/master/intro/tutorial.html
当我尝试运行在 Crawling(scrapy crawl dmoz) 部分中编写的代码时,我收到以下错误:
AttributeError: 'module' object has no attribute 'Spider'
但是,我将“Spider”更改为“spider”,但我得到了一个新错误:
TypeError: Error when calling the metaclass bases
module.__init__() takes at most 2 arguments (3 given)
我很困惑,有什么问题?任何帮助将不胜感激。谢谢。顺便说一句,我正在使用 Windows。
编辑(添加来源):
首先,我使用 Scrapy 创建了一个项目,方法是转到一个目录并通过 cmd 运行以下命令,如下所示:
cd #DIRECTORY PATH#
scrapy startproject tutorial
这将在给定目录中创建一个名为 tutorial 的文件夹。教程文件夹包括:
教程/ scrapy.cfg 教程/ 初始化.py 项目.py 管道.py 设置.py 蜘蛛/ 初始化.py ...
然后我定义了我的项目:
import scrapy
class DmozItem(scrapy.Item):
title = scrapy.Field()
link = scrapy.Field()
desc = scrapy.Field()
之后,我创建了蜘蛛:
导入scrapy
class DmozSpider(scrapy.Spider):
name = "dmoz"
allowed_domains = ["dmoz.org"]
start_urls = [
"http://www.dmoz.org/Computers/Programming/Languages/Python/Books/",
"http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/"
]
def parse(self, response):
filename = response.url.split("/")[-2]
with open(filename, 'wb') as f:
f.write(response.body)
然后,在运行代码时,会显示错误。我正在使用 Windows 7 64 位和 Python 2.7 32 位。
编辑 2:
我尝试卸载并安装另一个 Scrapy 版本,但没有成功。这是日志:
C:\Users\Novin Pendar\Desktop\FS\tutorial>scrapy crawl dmoz
2015-03-26 17:48:29+0430 [scrapy] INFO: Scrapy 0.16.5 started (bot: tutorial)
2015-03-26 17:48:29+0430 [scrapy] DEBUG: Enabled extensions: LogStats, TelnetCon
sole, CloseSpider, WebService, CoreStats, SpiderState
C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\__init__.pyc
Traceback (most recent call last):
File "C:\Python27\lib\runpy.py", line 162, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "C:\Python27\lib\runpy.py", line 72, in _run_code
exec code in run_globals
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\cmdline.py"
, line 156, in <module>
execute()
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\cmdline.py"
, line 131, in execute
_run_print_help(parser, _run_command, cmd, args, opts)
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\cmdline.py"
, line 76, in _run_print_help
func(*a, **kw)
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\cmdline.py"
, line 138, in _run_command
cmd.run(args, opts)
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\commands\cr
awl.py", line 43, in run
spider = self.crawler.spiders.create(spname, **opts.spargs)
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\command.py"
, line 33, in crawler
self._crawler.configure()
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\crawler.py"
, line 40, in configure
self.spiders = spman_cls.from_crawler(self)
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\spidermanag
er.py", line 35, in from_crawler
sm = cls.from_settings(crawler.settings)
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\spidermanag
er.py", line 31, in from_settings
return cls(settings.getlist('SPIDER_MODULES'))
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\spidermanag
er.py", line 22, in __init__
for module in walk_modules(name):
File "C:\Python27\lib\site-packages\scrapy-0.16.5-py2.7.egg\scrapy\utils\misc.
py", line 65, in walk_modules
submod = __import__(fullpath, {}, {}, [''])
File "tutorial\spiders\dmoz_spider.py", line 3, in <module>
class DmozSpider(scrapy.Spider):
AttributeError: 'module' object has no attribute 'Spider'
编辑 3:
问题解决了。我下载了最新版本的 Scrapy(0.24) 并安装了。一切都很好。只是想对那些和我以前有同样问题的人说,所以,他们会为他们节省很多时间。谢谢。
【问题讨论】:
-
请检查您编写的代码。如果和教程中的完全一样,请将你写的贴在这里,有人可以为你调试。
-
我将编辑我的帖子。谢谢。
-
你是如何安装scrapy的?
-
@NoufalIbrahim:我尝试使用 distutils 安装它,但在收到未知错误后,我尝试使用 pip 安装它。
标签: python module web-crawler scrapy