安装python3

shadow

安装python3.6
可查看参考https://www.cnblogs.com/kimyeee/p/7250560.html
cd /usr/local
1. 安装依赖环境

1. 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

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2.下载Python3

1. https://www.python.org/downloads/
   
2. wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz

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3.解压下载好的Python-3.x.x.tgz包

1. tar -zxvf Python-3.6.5.tgz

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4.重命名Python3.6.1

1. mv Python-3.6.5 Python3

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5.进入解压后的目录，编译安装。（按顺序执行）

1. cd Python3
   
2. ./configure --prefix=/usr/local/python3
   
3. make
   
4. make install  或者 make && make install

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6.建立python3的软链

1. ln -s /usr/local/python/bin/python3 /usr/bin/python3

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6.并将/usr/local/python3/bin加入PATH

1. vi  /etc/profile
   
2. PATH=$PATH:$HOME/bin:/usr/local/python3/bin
   
3. export PATH

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