# yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
2.下载Python3
# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
3.安装python3
我个人习惯安装在/usr/local/python3（具体安装位置看个人喜好）
创建目录：
# mkdir -p /usr/local/python3
解压下载好的Python-3.x.x.tgz包(具体包名因你下载的Python具体版本不不同?而不不同，如：我下载的是Python3.6.1.那我这里就是Python-3.6.1.tgz)
# tar -zxvf Python-3.6.1.tgz
4.进入解压后的目录，编译安装。
# cd Python-3.6.1 # ./configure --prefix=/usr/local/python3
make
# make
make install
make install 或者 make && make install
5.建立python3的软链
# ln -s /usr/local/python3/bin/python3 /usr/bin/python3
6.并将/usr/local/python3/bin加入PATH
# vim ~/.bash_profile # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs PATH=$PATH:$HOME/bin:/usr/local/python3/bin export PATH
按ESC，输入:wq回车退出。
修改完记得执行行下面的命令，让上一步的修改生效：
# source ~/.bash_profile
检查Python3及pip3是否正常可用：
# python3 -V Python 3.6.1 # pip3 -V pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)
7.不行的话尝试创建一下pip3的软链接
# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
