Cannot uninstall 'pyOpenSSL'. It is a distutils installed project and thus we cannot accurately dete

• linux python2.7安装scrapy报错 ERROR: Cannot uninstall ‘pyOpenSSL’. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
• 应该就是这个six导致的(真是666)，忽略它 ；解决办法：
  • 原来的命令(我是本地文件安装的)

  pip2.7 install Scrapy-1.8.0-py2.py3-none-any.whl 
  

  • 改成

  
  pip2.7 install Scrapy-1.8.0-py2.py3-none-any.whl   --upgrade --ignore-installed six