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由于 OS X El Capitan 采用了 System Integrity Protection 保护技术，导致 sudo pip install 安装python包时会产生报错：
1 File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 150, in makedirs 2 makedirs(head, mode) 3 File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 157, in makedirs 4 mkdir(name, mode) 5 OSError: [Errno 1] Operation not permitted: ‘/System/Library/Frameworks/Python.framework/Versions/2.7/selenium‘
SIP 相关命令 csrutil：
1 xx:~ $ csrutil 2 usage: csrutil <command> 3 Modify the System Integrity Protection configuration. All configuration changes apply to the entire machine. 4 Available commands: 5 6 clear 7 Clear the existing configuration. Only available in Recovery OS. 8 disable 9 Disable the protection on the machine. Only available in Recovery OS. 10 enable 11 Enable the protection on the machine. Only available in Recovery OS. 12 status 13 Display the current configuration. 14 15 netboot 16 add <address> 17 Insert a new IPv4 address in the list of allowed NetBoot sources. 18 list 19 Print the list of allowed NetBoot sources. 20 remove <address> 21 Remove an IPv4 address from the list of allowed NetBoot sources.
查看当前SIP状态：
1 xx:~ $ csrutil status 2 System Integrity Protection status: enabled.
受到SIP保护的路径：
如果需要全局安装python包，则需要先关闭SIP，具体方法如下：
1、重启系统，重启过程中按住option然后选择恢复分区
2、进入恢复系统后点击菜单“实用工具”，打开终端，输入csrutil disable
3、正常重启
4、sudo pip install xx包
5、安装完毕后建议进入恢复分区通过终端打开SIP: csrutil enable
另外建议：关闭SIP后安装virtualenv，然后打开SIP，后续通过virtualenv进行环境管理。
参考链接：
http://www.cnblogs.com/xiongqiangcs/p/4914049.html
https://support.apple.com/en-us/HT204899
Mac OS X El Capitan (10.11) sudo pip install 报错 “OSError: [Errno 1] Operation not permitted”
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原文地址：http://www.cnblogs.com/xcfree/p/5059852.html
