1.两个问题:
(1)Configuration: OptionBinding with id "failovermethod" does not exist
vim /etc/yum.repos.d/CentOS-Epel.repo
注释调中 failovermethod=priority
(2)Failed to download metadata for repo 'appstream'
1.cd /etc/yum.repos.d/
2.sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
3.sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
4.yum update -y
2.更换python
1.yum install python3.8
2.ln -sb /usr/bin/python3.8 /usr/bin/python3
ln -sb /usr/bin/pip3.8 /usr/bin/pip3
3.查看版本
3.python虚拟环境
1.mkdir /root/.virtualenvs
2.pip3 install virtualenv # 安装 virtualenv
pip3 install virtualenvwrapper # 安装 管理包
3. whereis virtualenvwrapper.sh # 查看 目录
4.vim ~/.bashrc # 打开 配置环境 添加以下
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 #python 版本
export WORKON_HOME=/root/.virtualenvs # 虚拟环境路径
source /usr/local/bin/virtualenvwrapper.sh
source ~/.bashrc # 加载 配置
5.mkvirtualenv -p python3 projects # 创建虚拟环境 名称
退出虚拟环境: deactivate
删除虚拟环境:rmvirtualenv 虚拟环境名称
选择虚拟环境: workon
4.问题:ImportError: libGL.so.1: cannot open shared object file
yum install mesa-libGL.x86_64
5.python-Levenshtein装不上
sudo yum install python38-devel