Example getting task to run when launching debug

launch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Backend: Debug",
      "type": "python",
      "request": "launch",
      "module": "flask",
      "cwd": "${workspaceFolder}",
      "args": [
        "run",
        "--host=0.0.0.0"
      ],
      "preLaunchTask": "strip webhook",
      "jinja": true
    }
  ]
}

task.json

{
  "version": "2.0.0",
  "tasks": [
    {
      "label": "strip login",
      "type": "shell",
      "command": "stripe login --project-name=example"
    },
    {
      "label": "strip webhook",
      "type": "shell",
      "command": "stripe listen --project-name=example --forward-to=http://localhost:5000/webhooks/stripe",
      "isBackground": true,
      "problemMatcher": [
        {
          "pattern": [
            {
              "regexp": ".",
              "file": 1,
              "location": 2,
              "message": 3
            }
          ],
          "background": {
            "activeOnStart": true,
            "beginsPattern": ".",
            "endsPattern": ".",
          }
        }
      ]
    }
  ]
}