docsanswers-71401.txt

 1. settings.json is configured so that VS Code can configure the functions host environment 

    {
      "azureFunctions.deploySubpath": ".",
      "azureFunctions.scmDoBuildDuringDeployment": true,
      "azureFunctions.pythonVenv": ".venv",
      "azureFunctions.projectLanguage": "Python",
      "azureFunctions.projectRuntime": "~3",
      "debug.internalConsoleOptions": "neverOpen"
    }

 2. tasks.json is configured so that VS Code can install your requirements.txt against your virtual environment

    {
      "version": "2.0.0",
      "tasks": [
        {
          "type": "func",
          "command": "host start",
          "problemMatcher": "$func-watch",
          "isBackground": true,
          "dependsOn": "pipInstall"
        },
        {
          "label": "pipInstall",
          "type": "shell",
          "windows": {
            "command": "${config:azureFunctions.pythonVenv}\\Scripts\\python -m pip install -r requirements.txt"
          },
          "problemMatcher": []
        }
      ]
    }

 3. launch.json waits on task.json to start so it can attach the debugger `func host`

    {
      "version": "0.2.0",
      "configurations": [
        {
          "name": "Attach to Python Functions",
          "type": "python",
          "request": "attach",
          "port": 9091,
          "preLaunchTask": "func: host start"
        }
      ]
    }