1、安装mysql，使用brew或者下载压缩包都可以

        brew install mysql

2、下载Mysql-python。链接地址:https://files.pythonhosted.org/packages/a5/e9/51b544da85a36a68debe7a7091f068d802fc515a3a202652828c73453cad/MySQL-python-1.2.5.zip

3、解压mysql-python.zip，并修改 site.cfg 文件,指定mysql_config路径，在mysql安装目录下

        mysql_config = /usr/local/Cellar/mysql/8.0.16/bin/mysql_config

正常安装之后，使用的时候可能会报错：Library not loaded: /usr/local/mysql/lib/libmysqlclient.20.dylib

解决办法：从mysql安装目录链接过来，sudo ln -s  /usr/local/Cellar/mysql/8.0.16 /usr/local/mysql