MySQLdb for Mac安装报错及问题解决

MysqLdb 是用于Python链接MysqL数据库的接口

安装MysqLdb可以用终端命令

pip3 install MysqLdb-python　　

但是出现报错，错误原因为

：MysqL_config not found　　

这是因为在配置文件中，找不到MysqL配置文件导致，也就是 MysqL_config

解决办法：

手动下载MysqLdb文件包，下载链接：https://pypi.org/project/MySQL-python/#files

解压之后找到配置文件"site.cfg"，找到

#MysqL_config = /usr/local/bin/MysqL_config
去掉注释#，并修改为安装的MysqL配置文件的正确路径
MysqL_config = /usr/local/MysqL/bin/MysqL_config

然后在终端中，先进入刚才查找site.cfg所在的文件夹

运行安装命令

sudo python3 setup.py install

然后就是又一个报错

xcrun: error: invalid active developer path (/Library/Developer/CommandLinetools), missing xcrun at: /Library/Developer/CommandLinetools/usr/bin/xcrun
error: command 'gcc' Failed with exit status 1

找到这个文件夹Developer，发现里面几乎没啥东西，后来知道mac在重装系统后会删除xcode，需要重新安装

xcode-select --install

安装成功之后在运行MysqLdb的安装命令

sudo python3 setup.py install　　

 还是报错，要疯了

sudo easy_install MysqL-python
Password:
Searching for MysqL-python
Reading http://pypi.python.org/simple/MysqL-python/
Reading http://sourceforge.net/projects/MysqL-python/
Reading http://sourceforge.net/projects/MysqL-python
Best match: MysqL-python 1.2.3
Downloading http://pypi.python.org/packages/source/M/MysqL-python/MysqL-python-1.2.3.tar.gz#md5=215eddb6d853f6f4be5b4afc4154292f
Processing MysqL-python-1.2.3.tar.gz
Running MysqL-python-1.2.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-UoZlf7/MysqL-python-1.2.3/egg-dist-tmp-phaQqE
warning: no files found matching 'MANIFEST'
warning: no files found matching 'ChangeLog'
warning: no files found matching 'GPL'
clang: warning: argument unused during compilation: '-mno-fused-madd'
_MysqL.c:36:10: Fatal error: 'my_config.h' file not found
#include "my_config.h"
         ^
1 error generated.
error: Setup script exited with error: command 'clang' Failed with exit status 1
ninjaiimac:MysqL-python-1.2.3 sunninjaisun$ 

遍寻不到方法，最后还是stackoverflow上的大神

brew install MysqL
brew unlink MysqL
brew install mysql-connector-c
sed -i -e 's/libs="$libs -l "/libs="$libs -lMysqLclient -lssl -lcrypto"/g' /usr/local/bin/MysqL_config
pip install MysqL-python
brew unlink mysql-connector-c
brew link --overwrite MysqL

一顿操作猛如虎，然后继续原来的安装命令

 其实还不行，但是就这几条命令，根据提示试一两次也就成功了，虽然还有格式错误，但已经不妨碍了。

在pycharm中MysqLdb下面终于没有红色波浪线了。