在python2.7中使用scrapy startproject时出错

Question

我在python2.7下成功安装了Scrapy，当我使用scrapy startproject示例创建一个新项目时，引发了异常：

Traceback (most recent call last):
  File "/usr/local/bin/scrapy", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/local/lib/python3.4/site-packages/pkg_resources.py", line 2697, in <module>
    working_set.require(__requires__)
  File "/usr/local/lib/python3.4/site-packages/pkg_resources.py", line 669, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/local/lib/python3.4/site-packages/pkg_resources.py", line 572, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: six>=1.5.2

任何想法？提前感谢！