centos7安装Python3.7

`CentOS 7.6 默认安装了 Python 2.7.5**

一.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 
# 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

yum install libffi-devel -y  

二.下载Python安装包

下载python安装包
三.解压

tar -zxvf Python-3.7.2.tar.xz 

四.编译与安装

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

五.做软连接

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 

六.

python3 --version 

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