python 代码提示 ValueError: unknown locale: UTF-8

File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py”, line 475, in _parse_localename
raise ValueError, ‘unknown locale: %s’ % localename
ValueError: unknown locale: UTF-8

需要修改bash_profile 或者.bashrc（看你用的哪种shell)，下面以.bashrc为例：,
sudo vim ~/.zshrc （.bashrc）
添加：

export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8

source ~/.zshrc

重新运行即可