brew安装python3，但不能链接到python3

Question

所以我正试图通过brew安装brew

==> Downloading https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz
Already downloaded: /Users/leongaban/Library/Caches/Homebrew/python3-3.6.4.tar.xz
==> ./configure --prefix=/usr/local/Cellar/python3/3.6.4_2 --enable-ipv6 --datarootdir=/usr/local/Cellar/python3/3.6.4_2/shar
==> make
==> make install PYTHONAPPSDIR=/usr/local/Cellar/python3/3.6.4_2
==> make frameworkinstallextras PYTHONAPPSDIR=/usr/local/Cellar/python3/3.6.4_2/share/python3
==> Downloading https://files.pythonhosted.org/packages/a4/c8/9a7a47f683d54d83f648d37c3e180317f80dc126a304c45dc6663246233a/se
Already downloaded: /Users/leongaban/Library/Caches/Homebrew/python3--setuptools-36.5.0.zip
==> Downloading https://files.pythonhosted.org/packages/11/b6/abcb525026a4be042b486df43905d6893fb04f05aac21c32c638e939e447/pi
Already downloaded: /Users/leongaban/Library/Caches/Homebrew/python3--pip-9.0.1.tar.gz
==> Downloading https://files.pythonhosted.org/packages/fa/b4/f9886517624a4dcb81a1d766f68034344b7565db69f13d52697222daeb72/wh
Already downloaded: /Users/leongaban/Library/Caches/Homebrew/python3--wheel-0.30.0.tar.gz

Error: An unexpected error occurred during the `brew link` step
The formula built, but is not symlinked into /usr/local
Permission denied @ dir_s_mkdir - /usr/local/Frameworks
Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks
➜  ~ python -V
Python 2.7.10
➜  ~ brew link python3 
Linking /usr/local/Cellar/python3/3.6.4_2... Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks

按照以下步骤，我找到了这个答案，但仍然遇到无法链接python3的问题，而python -V仍然显示2.7

brew install python3 didn't install pip3

Answer 1

sudo chown -R $(whoami) /usr/local

这将允许创建符号链接，从而解决链接问题。

Answer 2

阿!我刚刚修复了它，我在/usr/local/lib中创建了框架文件夹，而不是/usr/local/。

移动文件夹并重新运行sudo chown -R $(whoami) $(brew --prefix)/*之后

我可以brew link python3

Answer 3

为了获得更多的能见度，我在这里复制了来自@lucas的评论。这对我有用。

1. 手动创建框架目录。

sudo mkdir /usr/local/Frameworks

1. 更改对新目录的权限。

sudo chown -R $(whoami) /usr/local/Frameworks

1. 运行brew link命令以完成符号链接。

brew link python3