pip install MySQL-python 失敗

1. EnvironmentError: mysql_config not found
原因：/usr/bin/mysql_config沒有次文件，要安裝libmysqlclient-dev， apt install libmysqlclient-dev -y 如果能安裝上並且有了mysql_config此問題就可以解決了。如果libmysqlclient-dev 沒有安裝成功，提示：E: Unable to correct problems, you have held broken packages 先參考http://www.cnblogs.com/aaron-agu/p/8862624.html 安裝好libmysqlclient-dev

2.  _mysql.c:29:20: fatal error: Python.h: No such file or directory
   #include "Python.h"
                      ^
  compilation terminated.
  error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
原因：python-dev 沒有安裝，如果apt-get install python-dev -y 可以成功安裝，此問題解決，如果提示如下錯誤 python-dev : Depends: python (= 2.7.11-1) but 2.7.12-1~16.04 is to be installed
              Depends: libpython-dev (= 2.7.11-1) but it is not going to be installed
              Depends: python2.7-dev (>= 2.7.11-1~) but it is not going to be installed
E: Unable to correct problems, you have held broken packages
此錯誤原因 python版本過高，aptitude install python-dev 類似http://www.cnblogs.com/aaron-agu/p/8862624.html的解決方案，降級。