scrapy 安装报错: OSError: [Errno 1]

Found existing installation: six 1.4.1

DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.

Uninstalling six-1.4.1:

OSError: [Errno 1] Operation not permitted: '/tmp/pip-hzOwoN-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info'

解决方案:sudo pip install scrapy --ignore-installed sex