sudo yum install python-pip

没有可用软件包 python-pip。

yum install epel-release.noarch

yum install python-pip

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple wordcloud

截取部分提示错误信息 
unable to execute gcc: No such file or directory
error: command 'gcc' failed with exit status 1

连gcc都没有(ง •̀_•́)ง。先安装gcc
yum install gcc

_posixsubprocess.c:3:20: 致命错误：Python.h：没有那个文件或目录

于是需要先安装python-devel

sudo yum install python-devel　　#注意这里不是python-dev

# -*- coding: UTF-8 -*-
import matplotlib
# Force matplotlib to not use any Xwindows backend.
#matplotlib.use('Agg')

from wordcloud import WordCloud

textfile = open(u'txt/word.txt','r').read()
wordcloud = WordCloud(background_color="white",width=800, height=600, margin=5).generate(textfile)

# width,height,margin可以设置图片属性
# generate 可以对全部文本进行自动分词,但是它对中文支持不好
#background_color参数为设置背景颜色,默认颜色为黑色

wordcloud.to_file('word.png')

SyntaxError: Non-ASCII character '\xe5' in file clouddemo.py on line 6, 
but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

# -*- coding: UTF-8 -*- 

ImportError: No module named Tkinter

tkinter.TclError: no display name and no $DISPLAY environment variable