第一章：系统基础信息模块：
下载psutil模块在安装的过程中报错：
wget https://pypi.python.org/packages/source/p/psutil/psutil-2.0.0.tar.gz
那我们是怎么去找到这些需要的包呢？当然是官网
https://pypi.python.org/直接在这里搜索包名称即可
[email protected] psutil-2.0.0]# python setup.py install
running install
running build
running build_py
running build_ext
building ‘_psutil_linux‘ extension
gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/python2.7 -c psutil/_psutil_linux.c -o build/temp.linux-x86_64-2.7/psutil/_psutil_linux.o
psutil/_psutil_linux.c:12:20: fatal error: Python.h: No such file or directory
#include <Python.h>
^
compilation terminated.
error: command ‘gcc‘ failed with exit status 1
解决方法：安装python开发静态库：
yum install python-devel