YetToCome wrote:
> I have already install Twisted, zope.interface, w3lib, libxml2, etc,but it
> still can not be built,here is the error message:
>
> 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\cmdline.py", line 167, in
> <module>
> execute()
> File "C:\Python27\lib\site-packages\scrapy\cmdline.py", line 142, in
> execute
> _run_print_help(parser, _run_command, cmd, args, opts)
> File "C:\Python27\lib\site-packages\scrapy\cmdline.py", line 88, in
> _run_print
> _help
> func(*a, **kw)
> File "C:\Python27\lib\site-packages\scrapy\cmdline.py", line 149, in
> _run_comm
> and
> cmd.run(args, opts)
> File "C:\Python27\lib\site-packages\scrapy\commands\crawl.py", line 47,
> in run
> crawler = self.crawler_process.create_crawler()
> File "C:\Python27\lib\site-packages\scrapy\crawler.py", line 142, in
> create_cr
> awler
> self.crawlers[name] = Crawler(self.settings)
> File "C:\Python27\lib\site-packages\scrapy\crawler.py", line 23, in
> __init__
> self.spiders = spman_cls.from_crawler(self)
> File "C:\Python27\lib\site-packages\scrapy\spidermanager.py", line 35,
> in from
> _crawler
> sm = cls.from_settings(crawler.settings)
> File "C:\Python27\lib\site-packages\scrapy\spidermanager.py", line 31,
> in from
> _settings
> return cls(settings.getlist('SPIDER_MODULES'))
> File "C:\Python27\lib\site-packages\scrapy\spidermanager.py", line 22,
> in __in
> it__
> for module in walk_modules(name):
> File "C:\Python27\lib\site-packages\scrapy\utils\misc.py", line 66, in
> walk_mo
> dules
> submod = __import__(fullpath, {}, {}, [''])
> File "blog_crawl\spiders\dmoz_spider.py", line 1, in <module>
> class DmozSpider(BaseSpider):
> NameError: name 'BaseSpider' is not defined
>
> someone tells me why, pls
Assuming you are working your way through the tutorial at
http://doc.scrapy.org/en/latest/intro/tutorial.html#our-first-spider
you probably forgot to import the BaseSpider class with
from scrapy.spider import BaseSpider
as shown in the code snippet in the "Our first Spider" section of the
tutorial.
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