使用命令：
pip install twisted
发现了如下错误：
src/twisted/test/raiser.c:4:20: 致命错误：Python.h：没有那个文件或目录
#include "Python.h"
^
编译中断。
error: command 'gcc' failed with exit status 1
红色部分出错提示：
Command "/usr/bin/python2 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-mUmfzz/twisted/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-77C8__-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-mUmfzz/twisted/
网上查找了一下，初步判断应该是缺少依赖包，执行如下命令：
yum install python-devel
然后再次安装 pip install twisted
安装完成如下提示：
Requirement already satisfied: zope.interface>=3.6.0 in /usr/lib64/python2.7/site-packages (from twisted)
Requirement already satisfied: constantly>=15.1 in /usr/lib/python2.7/site-packages (from twisted)
Requirement already satisfied: incremental>=16.10.1 in /usr/lib/python2.7/site-packages (from twisted)
Requirement already satisfied: Automat>=0.3.0 in /usr/lib/python2.7/site-packages (from twisted)
Requirement already satisfied: hyperlink>=17.1.1 in /usr/lib/python2.7/site-packages (from twisted)
Requirement already satisfied: setuptools in /usr/lib/python2.7/site-packages (from zope.interface>=3.6.0->twisted)
Requirement already satisfied: attrs in /usr/lib/python2.7/site-packages (from Automat>=0.3.0->twisted)
Requirement already satisfied: six in /usr/lib/python2.7/site-packages (from Automat>=0.3.0->twisted)
Installing collected packages: twisted
Running setup.py install for twisted ... done
Successfully installed twisted-17.9.0
但是为啥是python2.7，我是3.6.3。还是继续再研究一下。
