在vscode中选择：文件-首选项-设置-扩展-Python-settings.json

向setting.json添加如下代码:
 

    "terminal.integrated.env.osx": {
        "PYTHONPATH": "${workspaceFolder}/",
    },
    "terminal.integrated.env.linux": {
        "PYTHONPATH": "${workspaceFolder}/",
    },
    "terminal.integrated.env.windows": {
        "PYTHONPATH": "${workspaceFolder}/",
    },

重启vscode即可成功