python pip国内源 pip install Django -i https://pypi.tuna.tsinghua.edu.cn/simple 未安装pip 默认情况下可能未安装pip,一种可选解决方案是: python -m ensurepip --default-pip 虚拟环境 # 创建虚拟环境 python -m venv .venv # Unix进入虚拟环境 source .venv/bin/activate # Window进入虚拟环境 .venv/Scripts/activate # 退出虚拟环境 deactivate Test # 执行python单元测试 python -m unittest discover -s tests # 测试覆盖率 pip install coverage coverage run -m unittest discover -s tests coverage report coverage html