有两个月没有碰django了，没想到一下从11.3升级到了2.0。django框架团队真的是很用心。
最近需要使用django搭建一个网站，使用的数据库是mysql。
mac电脑里面已经安装好了mysql-5.7-community。
之前使用的python和mysql的链接模块是Pymysql，使用django-11.3版本的时候没有需要问题。但是重新更新了django到2.0，下载好之前的配置后（requests），运行程序发现这个问题：
mysqlclient 1.3.3 or newer is required; you have 0.7.11.None
好吧，连之前的Pymysql都不能用了，于是进行安装mysqlclient。
使用pip进行安装：
pip install mysqlclient
并没有那么顺利，立马进行报错:
sh: mysql_config: command not found Traceback (most recent call last): File "setup.py", line 15, in <module> ...
原来是没有找到mysql_config命令，那就进行添加吧：
(my-virtual-env-3.6.2) guoyanzongdeMacBook-Pro:Web_Assignment oldpan$ PATH="$PATH":/usr/local/mysql/bin
(my-virtual-env-3.6.2) guoyanzongdeMacBook-Pro:Web_Assignment oldpan$ mysql_config
Usage: /usr/local/mysql/bin/mysql_config [OPTIONS]
Compiler: Clang 8.1.0
Options:
--cflags [-I/usr/local/mysql/include ]
--cxxflags [-I/usr/local/mysql/include ]
--include [-I/usr/local/mysql/include]
--libs [-L/usr/local/mysql/lib -lmysqlclient ]
--libs_r [-L/usr/local/mysql/lib -lmysqlclient ]
--plugindir [/usr/local/mysql/lib/plugin]
--socket [/tmp/mysql.sock]
--port [0]
--version [5.7.19]
--libmysqld-libs [-L/usr/local/mysql/lib -lmysqld ]
--variable=VAR VAR is one of:
pkgincludedir [/usr/local/mysql/include]
pkglibdir [/usr/local/mysql/lib]
plugindir [/usr/local/mysql/lib/plugin]
好了，mysql_config能用了，接下来进行安装吧：
(my-virtual-env-3.6.2) guoyanzongdeMacBook-Pro:Web_Assignment oldpan$ pip install mysqlclient-1.3.12.tar.gz
Processing ./mysqlclient-1.3.12.tar.gz
Building wheels for collected packages: mysqlclient
Running setup.py bdist_wheel for mysqlclient ... error
Complete output from command /usr/local/opt/pyenv/versions/3.6.2/envs/my-virtual-env-3.6.2/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/private/var/folders/m7/1w3636y53qd6k5z6f1hzqhpc0000gn/T/pip-giyw6g30-build/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /var/folders/m7/1w3636y53qd6k5z6f1hzqhpc0000gn/T/tmpj4_ingaepip-wheel- --python-tag cp36:
running bdist_wheel
running build
running build_py
creating build
creating build/lib.macosx-10.12-x86_64-3.6
copying _mysql_exceptions.py -> build/lib.macosx-10.12-x86_64-3.6
creating build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/__init__.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/compat.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/connections.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/converters.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/cursors.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/release.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
copying MySQLdb/times.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb
creating build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/__init__.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/CLIENT.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/CR.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/ER.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/FLAG.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
copying MySQLdb/constants/REFRESH.py -> build/lib.macosx-10.12-x86_64-3.6/MySQLdb/constants
running build_ext
building '_mysql' extension
creating build/temp.macosx-10.12-x86_64-3.6
clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -Dversion_info=(1,3,12,'final',0) -D__version__=1.3.12 -I/usr/local/mysql/include -I/usr/local/opt/pyenv/versions/3.6.2/include/python3.6m -c _mysql.c -o build/temp.macosx-10.12-x86_64-3.6/_mysql.o
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
又遇到了问题，经查询是没有安装xcode工具：
打开mac的终端：
xcode-select --install
过了一两分钟后，安装好了，现在再进行安装mysqlclient：
(my-virtual-env-3.6.2) guoyanzongdeMacBook-Pro:Web_Assignment oldpan$ pip install mysqlclient-1.3.12.tar.gz Processing ./mysqlclient-1.3.12.tar.gz Building wheels for collected packages: mysqlclient Running setup.py bdist_wheel for mysqlclient ... done Stored in directory: /Users/oldpan/Library/Caches/pip/wheels/d1/94/21/97409904f278ca3331b447b448a3e90757b24aa72ddc8e22f1 Successfully built mysqlclient Installing collected packages: mysqlclient Successfully installed mysqlclient-1.3.12
终于安装好了！
参考资料：
1、http://blog.csdn.net/kedongjun/article/details/51470506
2、http://blog.csdn.net/u014642465/article/details/73890308
3、https://www.cnblogs.com/roystime/p/6920489.html
4、https://www.cnblogs.com/njj10/p/7676123.html
