问题记录

Mac下Python版本切换

使用pyenv安装完高版本的Python后,想要切换到原来mac自带的版本,只需要在.bash_profile最后面添加上:

# Setting PATH for Python 2.7
# The orginal version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"
export PATH

Mac在启动时,会先加载系统配置文件(包括~/.bash_profile),所有默认的命令路径将会被配置文件中的路径覆盖,并且,是后面覆盖前面的路径:例如,在终端输入Python,系统会在配置文件中的路径查找,一直到找到位置(在配置文件中从后面向前找)。详细讲解请参考:https://www.zhihu.com/question/30941329中Steven Liu的回答。

系统自带Python下安装第三方插件提示无权限问题

Installing Setuptools running install Checking .pth file support in /Library/Python/2.7/site-packages/ error: can't create or remove files in install directory The following error occurred while trying to add or remove files in the installation directory:

[Errno 13] Permission denied: '/Library/Python/2.7/site-packages/test-easy-install-789.pth'

The installation directory you specified (via --install-dir, --prefix, or the distutils default setting) was:

/Library/Python/2.7/site-packages/

解决方法:使用sudo python setup.py install

原文地址:https://www.cnblogs.com/zwliang/p/5995028.html