config.content === 'number') {\n      config.content = config.content.toString()\n    }\n\n    Util.typeCheckConfig(\n      NAME,\n      config,\n      this.constructor.DefaultType\n    )\n\n    if (config.sanitize) {\n      config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn)\n    }\n\n    return config\n  }\n\n  _getDelegateConfig() {\n    const config = {}\n\n    if (this.config) {\n      for (const key in this.config) {\n        if (this.constructor.Default[key]...

* <a href="https://jinja.palletsprojects.com" target="_blank"><code>jinja2</code></a> - Követelmény ha az alap template konfigurációt akarod használni.

* <a href="https://jinja.palletsprojects.com" target="_blank"><code>jinja2</code></a> - Standart <abbr title="Şablon: Template">şablon</abbr> konfiqurasiyasından istifadə etmək istəyirsinizsə, tələb olunur.

    component: controller
  name: controller
  namespace: metallb-system
spec:
  revisionHistoryLimit: 3
  selector:
    matchLabels:
      app: metallb
      component: controller
  template:
    metadata:
      annotations:
        prometheus.io/port: "7472"
        prometheus.io/scrape: "true"
      labels:
        app: metallb
        component: controller
    spec:

    String JOB_TEMPLATE_TITLE_WEB = "job.template.title.web";

    /** The key of the configuration. e.g. File Crawler - {0} */
    String JOB_TEMPLATE_TITLE_FILE = "job.template.title.file";

    /** The key of the configuration. e.g. Data Crawler - {0} */
    String JOB_TEMPLATE_TITLE_DATA = "job.template.title.data";

* <a href="http://jinja.pocoo.org" target="_blank"><code>jinja2</code></a> - Richiesto se vuoi usare la configurazione template di default.

config.content === 'number') {\n      config.content = config.content.toString()\n    }\n\n    Util.typeCheckConfig(\n      NAME,\n      config,\n      this.constructor.DefaultType\n    )\n\n    if (config.sanitize) {\n      config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn)\n    }\n\n    return config\n  }\n\n  _getDelegateConfig() {\n    const config = {}\n\n    if (this.config) {\n      for (const key in this.config) {\n        if (this.constructor.Default[key]...

    @CheckForNull private volatile Cancellable runningTask;
    @CheckForNull private volatile ScheduledExecutorService executorService;

    // This lock protects the task so we can ensure that none of the template methods (startUp,
    // shutDown or runOneIteration) run concurrently with one another.
    // TODO(lukes): why don't we use ListenableFuture to sequence things? Then we could drop the
    // lock.

而且您还可以将 Alembic 用于“迁移”（这是它的主要工作）。

“迁移”是每当您更改 SQLAlchemy 模型的结构、添加新属性等以在数据库中复制这些更改、添加新列、新表等时所需的一组步骤。

您可以在[Full Stack FastAPI Template](https://fastapi.tiangolo.com/zh/project-generation/)的模板中找到一个 FastAPI 项目中的 Alembic 示例。具体在[`alembic`代码目录中](https://github.com/tiangolo/full-stack-fastapi-template/tree/master/backend/app/alembic)。

### 创建依赖项

现在使用我们在`sql_app/database.py`文件中创建的`SessionLocal`来创建依赖项。

* <a href="https://jinja.palletsprojects.com" target="_blank"><code>jinja2</code></a> - Obligatoire si vous souhaitez utiliser la configuration de template par défaut.