通过 pyenv 安装多版本 Python 环境，实现 Python 版本的灵活切换。
1 项目地址
pyenv/pyenv-installer: This tool is used to install pyenv and friends. (github.com)
2 安装
2.1 安装依赖环境
Common build problems · pyenv/pyenv Wiki (github.com)
Debian
apt install -y build-essential libssl-dev zlib1g-dev libbz2-dev \
libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
xz-utils tk-dev libffi-dev liblzma-dev python-openssl git
CentOS
yum install @development zlib-devel bzip2 bzip2-devel readline-devel sqlite \
sqlite-devel openssl-devel xz xz-devel libffi-devel findutils
2.2 安装 pyenv
curl https://pyenv.run | bash
cat >> ~/.bashrc <<EOF
export PATH="/home/admin/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
EOF
exec $SHELL
pyenv versions
2.3 安装 Python 版本
pyenv versions
pyenv install 3.9.1
pyenv global 3.9.1
使用镜像地址安装：
v=3.9.2;wget https://npm.taobao.org/mirrors/python/$v/Python-$v.tar.xz -P ~/.pyenv/cache/;pyenv install $v
v=3.8.8;wget https://npm.taobao.org/mirrors/python/$v/Python-$v.tar.xz -P ~/.pyenv/cache/;pyenv install $v
3 使用 Pyenv 创建虚拟环境
3.1 创建
pyenv virtualenv <version> <name>
pyenv virtualenv 3.9.1 test-python
3.2 激活
pyenv active <name>
pyenv active test-python
3.3 使用
pip install docker-compose
docker-compose up
