centos 7.6 安裝python2和python3

CentOS 7.6 默認安裝了 Python 2.7.5

 

準備環境

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及以上版本需要安裝libffi-devel，否則安裝時會報錯 ModuleNotFoundError: No module named ‘_ctypes’ 錯誤

 

下載

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

 

解壓

tar -xvJf Python-3.7.2.tar.xz

 

編譯、安裝

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

 

做軟鏈接

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

 

測試安裝結果：

python3 --version