vscode的setting中设定Virtual Env的文件夹路径
Python: Select Interpreter 选择Venv激活的虚拟环境
pip install matplotlib -U --timeout 1000 -i https://pypi.tuna.tsinghua.edu.cn/simple
pip install numpy -U --timeout 1000 -i https://pypi.tuna.tsinghua.edu.cn/simple
