Intro

# env
python v3.10.9
pip v22.3.1

python venv

# 1. 创建
py -m venv ll_env

# 2. 激活/启用 (window)
./ll_env/Scripts/activate

# 3. 退出
deactivate

python requirements

# （已安装库）生成 requriements.txt
pip freeze > requriements.txt

# 根据 requriements.txt 安装库
pip install -r requriements.txt