centos7 install python3

# 1. root权限, 安装依赖
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 gcc-c++

# 2. 从  https://www.python.org/ftp/python/  下载对应版本
wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

# 3. 创建 Python 3 目录
mkdir /usr/local/python3 

# 4. 解压下载文件并切换目录
tar -zxvf Python-3.6.4.tgz
cd Python-3.6.4/

# 5. 执行
./configure --prefix=/usr/local/python3
make && make install

# 6. 创建Python3的软链接, 创建Pip3的软链接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3