Centos7 "fatal error: Python.h: No such file or directory "commmand 'gcc' failed with exit status 1

使用pip安装matplotlib的时候出现了以下错误：

....
    _posixsubprocess.c:3:20: fatal error: Python.h: No such file or directory
     #include "Python.h"
                        ^
    compilation terminated.
    error: command 'gcc' failed with exit status 1

1. fatal error: Python.h: No such file or directory
2. command ‘gcc’ failed with exit status 1
   更新了gcc，还是不行，最后发现需要是缺少python-devel包，使用下面命令解决：

#centos
sudo yum -y install python-devel

#ubuntu
sudo apt-get install python-dev

#python3使用python3-dev