brew后安装python（2.7.13）：[Errno 13] Permission denied

Question

我在OS X 10.11.6上。我今天更新和升级了brew。之后，pip没有工作。它看起来好像在升级过程中没有安装它。当我完成了升级，我看到了警告：

Warning: The post-install step did not complete successfully You can try again using brew postinstall python 

于是我就brew postinstall python，然后我遇到的错误：

error: [Errno 13] Permission denied: '/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py' 

在this后，他们说：

The post-install step did not complete successfully due to error: could not delete '/usr/local/lib/python2.7/site-packages/pip/__init__.py': Permission denied. Manually deleting that file and then running brew postinstall python again fixed it.

所以我认为修复将是相同的，我手动删除/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py'，以便

$ ls /usr/local/lib/python2.7/site-packages/pkg_resources/ 
_vendor extern 

我又跑brew postinstall python但现在我得到：

... 
copying build/lib/easy_install.py -> /usr/local/lib/python2.7/site-packages 
copying build/lib/pkg_resources/__init__.py -> /usr/local/lib/python2.7/site-packages/pkg_resources 
error: [Errno 13] Permission denied: '/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py'` 

我找到了 “修复” 使用easy_install安装PIP：

sudo easy_install pip 

而现在一切似乎很好地工作。不过，我有两个问题：

1. 我是不是已经搞乱了手动删除'/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py'？

2. 当brew postinstall python时[Errno 13] Permission denied会修复什么？

---

如果它没有任何用处的，这里是我的brew config和brew doctor输出毕竟今天发生：

$ brew config 
HOMEBREW_VERSION: 1.1.6 
ORIGIN: https://github.com/Homebrew/brew 
HEAD: 619791e83d2781dca1b675e20249a8aebe085c7c 
Last commit: 6 days ago 
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core 
Core tap HEAD: 5ce01ec9c8b9958e2d9a7791e4d4e2aa0bf4fd8f 
Core tap last commit: 89 minutes ago 
HOMEBREW_PREFIX: /usr/local 
HOMEBREW_REPOSITORY: /usr/local/Homebrew 
HOMEBREW_CELLAR: /usr/local/Cellar 
HOMEBREW_BOTTLE_DOMAIN: https://homebrew.bintray.com 
CPU: octa-core 64-bit haswell 
Homebrew Ruby: 2.0.0-p648 
Clang: 8.0 build 800 
Git: 2.10.1 => /Applications/Xcode.app/Contents/Developer/usr/bin/git 
Perl: /usr/bin/perl 
Python: /usr/local/bin/python => /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/bin/python2.7 
Ruby: /usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby 
Java: 1.8.0_91 
macOS: 10.11.6-x86_64 
Xcode: 8.2.1 
CLT: 8.2.0.0.1.1480973914 
X11: 2.7.11 => /opt/X11 

$ brew doctor 
Warning: Unbrewed dylibs were found in /usr/local/lib. 
If you didn't put them there on purpose they could cause problems when 
building Homebrew formulae, and may need to be deleted. 

Unexpected dylibs: 
    /usr/local/lib/libtcl8.6.dylib 
    /usr/local/lib/libtk8.6.dylib 

Warning: Unbrewed header files were found in /usr/local/include. 
If you didn't put them there on purpose they could cause problems when 
building Homebrew formulae, and may need to be deleted. 

Unexpected header files: 
    /usr/local/include/fakemysql.h 
    /usr/local/include/fakepq.h 
    /usr/local/include/fakesql.h 
    /usr/local/include/itcl.h 
    /usr/local/include/itcl2TclOO.h 
    /usr/local/include/itclDecls.h 
    /usr/local/include/itclInt.h 
    /usr/local/include/itclIntDecls.h 
    /usr/local/include/itclMigrate2TclCore.h 
    /usr/local/include/itclTclIntStubsFcn.h 
    /usr/local/include/mysqlStubs.h 
    /usr/local/include/odbcStubs.h 
    /usr/local/include/pqStubs.h 
    /usr/local/include/tcl.h 
    /usr/local/include/tclDecls.h 
    /usr/local/include/tclOO.h 
    /usr/local/include/tclOODecls.h 
    /usr/local/include/tclPlatDecls.h 
    /usr/local/include/tclThread.h 
    /usr/local/include/tclTomMath.h 
    /usr/local/include/tclTomMathDecls.h 
    /usr/local/include/tdbc.h 
    /usr/local/include/tdbcDecls.h 
    /usr/local/include/tdbcInt.h 
    /usr/local/include/tk.h 
    /usr/local/include/tkDecls.h 
    /usr/local/include/tkPlatDecls.h 

Warning: Unbrewed .pc files were found in /usr/local/lib/pkgconfig. 
If you didn't put them there on purpose they could cause problems when 
building Homebrew formulae, and may need to be deleted. 

Unexpected .pc files: 
    /usr/local/lib/pkgconfig/tcl.pc 
    /usr/local/lib/pkgconfig/tk.pc 

Warning: Unbrewed static libraries were found in /usr/local/lib. 
If you didn't put them there on purpose they could cause problems when 
building Homebrew formulae, and may need to be deleted. 

Unexpected static libraries: 
    /usr/local/lib/libtclstub8.6.a 
    /usr/local/lib/libtkstub8.6.a 

Answer 1

我发现的最简单的方法解决这个问题是只需将文件夹的所有权设置为您的用户名：

chown -R `whoami` /usr/local/lib/python2.7/site-packages/ 

编辑：有时，我也运行此：

sudo -H python3 -m pip install ... 

或

sudo -H pip install