Centos7.9 使用yum从第三方仓库安装Python3.8

Centos7 使用yum从第三方仓库安装Python3.8

环境：

CentOS Linux release 7.9.2009

起因：

Centos 7 自带Python2.7.5版本。而默认的 YUM 安装的python3是 3.6版本，遂升级到3.8版本。

# 仓库注册

cat >> /etc/yum.repos.d/centos-sclo.repo << "EOF"
[centos-sclo-sclo]
name=CentOS-7 - SCLo sclo
baseurl=https://mirrors.aliyun.com/centos/7/sclo/x86_64/sclo/
# mirrorlist=https://mirrors.aliyun.com?arch=$basearch&release=7&repo=sclo-sclo
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo

[centos-sclo-rh]
name=CentOS-7 - SCLo rh
baseurl=https://mirrors.aliyun.com/centos/7/sclo/x86_64/rh/
#mirrorlist=https://mirrors.aliyun.com?arch=$basearch&release=7&repo=sclo-rh
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo
EOF

# 安装python3.8
yum install -y rh-python39

# 创建软连接(已有软连接则删除)

ln -s /opt/rh/rh-python38/root/usr/bin/python3 /usr/bin/python3

ln -s /opt/rh/rh-python38/root/usr/bin/pip3 /usr/bin/pip3

# 确认版本
python3 -V
pip3 -V