调试的时候找到 launch.json文件，进入修改justMyCode属性为false，没有的话就加上这一行代码。

// An highlighted block
{
    "name": "Python: Current File",
    "type": "python",
    "request": "launch",
    "program": "${file}",
    "justMyCode": false,
    "cwd": "${fileDirname}"
}