mac下python3.6安装mysqlclient报错mysql_config: command

用mac在python3.6的环境下学习django，按照官网的步骤，却无法安装mysqlclient。报错mysql_config: command not found。

命令如下：

$ pip3 install mysqlclient

pip3是因为有两个python版本，给python3.6对应的pip起了个别名。不然提示找不到。
报错如下：

Collecting mysqlclient
Using cached mysqlclient-1.3.12.tar.gz

Complete output from command python setup.py egg_info:
/bin/sh: mysql_config: command not found
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/private/var/folders/ww/hnzjh2z517d72m15ybyhwkbw0000gn/T/pip-build-mvq09hkr/mysqlclient/setup.py", line 17, in <module>
    metadata, options = get_config()
  File "/private/var/folders/ww/hnzjh2z517d72m15ybyhwkbw0000gn/T/pip-build-mvq09hkr/mysqlclient/setup_posix.py", line 44, in get_config
    libs = mysql_config("libs_r")
  File "/private/var/folders/ww/hnzjh2z517d72m15ybyhwkbw0000gn/T/pip-build-mvq09hkr/mysqlclient/setup_posix.py", line 26, in mysql_config
    raise EnvironmentError("%s not found" % (mysql_config.path,))
OSError: mysql_config not found

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/ww/hnzjh2z517d72m15ybyhwkbw0000gn/T/pip-build-mvq09hkr/mysqlclient/

解决方法：

1、在~/.bash_profile中加入mysql.的路径

 $ cat ~/.bash_profile

set PATH /Library/Frameworks/Python.framework/Versions/3.6/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/Wireshark.app/Contents/MacOS:/usr/local/mysql/bin
export PATH

2、安装mysql-connector-c
brew install mysql-connector-c

如果电脑没有安装brew，按照以下方式安装brew，再安装mysql-connector-c：
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

3、再次安装
$ pip3 install mysqlclient

mac下python3.6安装mysqlclient报错mysql_config: command

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