CentOS 7.6 安装Python3.7.2 多版本共存

CentOS 7.6 默认安装了 Python 2.7.5

准备环境

yum install git gcc gcc-c++ make automake autoconf libtool pcre pcre-devel zlib zlib-devel openssl-devel wget vim -y

yum install libXcomposite libXcursor libXi libXtst libXrandr alsa-lib mesa-libEGL libXdamage mesa-libGL libXScrnSaver -y

yum install libffi-devel -y 
# Python3.7及以上版本需要安装libffi-devel，否则安装时会报错 ModuleNotFoundError: No module named ‘_ctypes’ 错误

下载

wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tar.xz

解压

tar -xvJf Python-3.7.2.tar.xz

编译、安装

cd Python-3.7.2/
./configure --enable-shared --prefix=/usr/local CFLAGS=-fPIC LDFLAGS="-Wl,-rpath /usr/local/lib"
make -j24
make install

做软链接

ln -sf /usr/local/bin/python3.7 /usr/bin/python3
ln -sf /usr/local/bin/python3.7 /usr/bin/python3.7
ln -sf /usr/local/bin/pip3.7 /usr/bin/pip3
ln -sf /usr/local/bin/pip3.7 /usr/bin/pip3.7

测试安装结果：

python3 --version

切换python为python3

rm -f /usr/bin/python
rm -f /usr/bin/pip
ln -sf /usr/local/python3/bin/python3 /usr/bin/python
ln -sf /usr/local/python3/bin/pip3 /usr/bin/pip