Centos7上安装Python3

yum -y install gcc make patch gdbm-devel openssl-devel sqlite-devel readline-devel zlib-devel bzip2-devel

# 一定要安装openssl-devel，不然无法调用ssl模块

# 如果是安装Python 3.7版本还需要libffi-devel

yum install libffi-devel -y

wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz

mkdir /usr/local/python3 

tar -xvJf  Python-3.6.2.tar.xz
cd Python-3.6.2
./configure --prefix=/usr/local/python3 --enable-optimizations
make && make install

# --prefix 是预期安装目录
# --enable-optimizations 是优化选项（LTO，PGO等）

ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3