按照以下操作流程走就安装完成
''' 安装必备包 '''
# yum groupinstall 'Development Tools'
# yum install -y ncurses-libs zlib-devel mysql-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
''' 下载python3.6.5 '''
# cd /usr/local/
# wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tar.xz
''' 解压'''
# tar -xf Python-3.6.5.tar.xz
# mkdir python3
# mv Python-3.6.5 python3
# cd python3/Python-3.6.5
# ./configure --prefix=/usr/local/python3 --enable-optimizations
# make
# make altinstall
''' 修改软连接 '''
# ln -s /usr/local/python3/bin/python3.6 /usr/bin/python3
# ln -s /usr/local/python3/bin/pip3.6 /usr/bin/pip3
''' 删除软连接,如果设置软连接出错使用 '''
rm -rf /usr/bin/python3
rm -rf /usr/bin/pip3
''' 检查是否安装版本正确 '''
python3 --version