python3 -m venv ${path}
pip freeze > requirements.txt
pip install pipreqs
pipreqs .
pip show ${package_name}
pip install package==
pip download -d ${path} -r requirement.txt
# 三种方式
import platform
import os
import sys
# 获取操作系统名称
os_name = platform.system()
# 获取操作系统的环境变量
os_env = os.environ
# 获取操作系统平台
os_platform = sys.platform