在交互环境
import scrapy # 成功
但是在终端 scrapy 新建项目就出错了
Traceback (most recent call last):
File "/usr/local/bin/scrapy", line 7, in <module>
from scrapy.cmdline import execute
File "/usr/local/lib/python2.7/dist-packages/scrapy/cmdline.py", line 9, in <module>
from scrapy.crawler import CrawlerProcess
File "/usr/local/lib/python2.7/dist-packages/scrapy/crawler.py", line 15, in <module>
from scrapy.signalmanager import SignalManager
File "/usr/local/lib/python2.7/dist-packages/scrapy/signalmanager.py", line 2, in <module>
from pydispatch import dispatcher
ImportError: No module named pydispatch
可是, pydispatch包已经有了呀!
$ pip install --upgrade pydispatch
Requirement already up-to-date: pydispatch in /usr/local/lib/python2.7/dist-packages
Requirement already up-to-date: colorama>=0.2.7 in /usr/local/lib/python2.7/dist-packages (from pydispatch)
Requirement already up-to-date: six>=1.5.2 in /usr/local/lib/python2.7/dist-packages (from pydispatch)
是否环境搭建的有问题?
在你出问题的代码中check一下安装包有没有:
方法取自:
http://stackoverflow.com/questions/739993/how-can-i-get-a-list-of-locally-installed-python-modules
我查了下Scrapy的 Release notes,发现
也就是说最新版本的scrapy是没有用到 pydispatch 模块的,用的是 pydispatcher 模块
所以可能你用的不是最新的scrapy?
解决方法的话,我建议你用virtualenv搭建一个独立的python环境,在这个环境下重新安装最新的scrapy.
或者直接在系统里重新安装scrapy
pip install PyDispatcher