如何让 Flask 应用程序在 VS Code 中工作？

Question

我已将example from the Flask-RESTful quick start page 复制到文件run.py 并从命令行启动它，效果很好：

mfb@Areion:/data/Development/Python/MLserver$ python server/run.py 
 * Serving Flask app "run" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 167-198-829

但是，当我从 VS Code 开始执行此操作时，我会收到以下输出和错误消息：

mfb@Areion:/data/Development/Python/MLserver$  cd /data/Development/Python/MLserver ; env /usr/local/bin/python /home/mfb/.vscode/extensions/ms-python.python-2020.6.89148/pythonFiles/lib/python/debugpy/launcher 34441 -- /data/Development/Python/MLserver/server/run.py 
 * Serving Flask app "run" (lazy loading)
 * Environment: development
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
No module named run

为什么找不到名为“run”的模块？
我的启动配置中需要一些东西吗？ 目前它看起来像这样：

"configurations": [
    {
        "name": "Start MLserver",
        "type": "python",
        "request": "launch",
        "program": "${workspaceFolder}/server/run.py",
        "env": {
            "FLASK_ENV": "development",
        },
        "console": "integratedTerminal"
    }

顺便说一句。通过 Ctrl+F5 启动时确实有效，因此该错误与 VS Code 调试器有关。

Answer 1

python 需要知道 Flask App 在哪里

编辑配置并将 FLASK_APP 变量添加到 env

*edit 替换配置为

"configurations": [
  {
    "name": "Python: Flask",
    "type": "python",
    "request": "launch",
    "module": "flask",
    "env": {
      "FLASK_APP": "server/run.py",
      "FLASK_ENV": "development",
      "FLASK_DEBUG": "0"
    },
    "args": ["run", "--no-debugger", "--no-reload"],
    "jinja": true
  }
]

观看这将对本主题有所帮助

Setting Up a Flask Application in Visual Studio Code