今天需要爬虫安装scrapy 使用sudo sudo -s 始终报错，原因为six版本太低升级six完成安装，具体如下：「仅供参考」
Exception:
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/pip/basecommand.py", line 209, in main
status = self.run(options, args)
File "/Library/Python/2.7/site-packages/pip/commands/install.py", line 317, in run
prefix=options.prefix_path,
File "/Library/Python/2.7/site-packages/pip/req/req_set.py", line 732, in install
**kwargs
File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 835, in install
self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 1030, in move_wheel_files
isolated=self.isolated,
File "/Library/Python/2.7/site-packages/pip/wheel.py", line 344, in move_wheel_files
clobber(source, lib_dir, True)
File "/Library/Python/2.7/site-packages/pip/wheel.py", line 322, in clobber
shutil.copyfile(srcfile, destfile)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 83, in copyfile
with open(dst, 'wb') as fdst:
IOError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/six.py' #升级six版本即可原版本太低
一开始以为是没有权限经过google搜索发现是six版本问题
第一次使用：
pip install --ignore-installed six
报错权限不足
然后使用：
sudo -s pip install --ignore-installed six
搞定！
然后使用 sudo -s pip install scrapy
问题解决参考：http://stackoverflow.com/questions/31900008/oserror-errno-1-operation-not-permitted-when-installing-scrapy-in-osx-10-11
github：https://github.com/pypa/pip/issues/3165
转自：http://www.bilibe.com/archives/265
