```Python hl_lines="6-9"
{!../../docs_src/background_tasks/tutorial001.py!}
```

## バックグラウンドタスクの追加

*path operations 関数* 内で、`.add_task()` メソッドを使用してタスク関数を *background tasks* オブジェクトに渡します。

```Python hl_lines="14"
{!../../docs_src/background_tasks/tutorial001.py!}
```

`.add_task()` は以下の引数を受け取ります:

* バックグラウンドで実行されるタスク関数 (`write_notification`)。
* タスク関数に順番に渡す必要のある引数の列 (`email`)。

m timepicker-orient-right timepicker-orient-left"),"auto"!==this.orientation.x?(this.$widget.addClass("timepicker-orient-"+this.orientation.x),"right"===this.orientation.x&&(m-=c-l)):(this.$widget.addClass("timepicker-orient-left"),j.left<0?m-=j.left-e:j.left+c>f&&(m=f-c-e));var o,p,q=this.orientation.y;"auto"===q&&(o=-h+j.top-d,p=h+g-(j.top+k+d),q=Math.max(o,p)===p?"top":"bottom"),this.$widget.addClass("timepicker-orient-"+q),"top"===q?n+=k:n-=d+parseInt(this.$widget.css("padding-top"),10),this...

        suggestor = {
          init: function($element, setting) {
            var suggestor;

            suggestingSts = false;
            $boxElement = $("<div/>");
            $boxElement.addClass("suggestorBox");

            //style sheet
            $boxElement.css("display", "none");
            $boxElement.css("position", "absolute");
            $boxElement.css("text-align", "left");

n){var e,r,i,o,a=typeof t,s="string"===a||Array.isArray(t);return v(t)?this.each(function(e){ce(this).toggleClass(t.call(this,e,Ct(this),n),n)}):"boolean"==typeof n&&s?n?this.addClass(t):this.removeClass(t):(e=kt(t),this.each(function(){if(s)for(o=ce(this),i=0;i<e.length;i++)r=e[i],o.hasClass(r)?o.removeClass(r):o.addClass(r);else void 0!==t&&"boolean"!==a||((r=Ct(this))&&_.set(this,"__className__",r),this.setAttribute&&this.setAttribute("class",r||!1===t?"":_.get(this,"__className__")||""))}))}...

n){var e,r,i,o,a=typeof t,s="string"===a||Array.isArray(t);return v(t)?this.each(function(e){ce(this).toggleClass(t.call(this,e,Ct(this),n),n)}):"boolean"==typeof n&&s?n?this.addClass(t):this.removeClass(t):(e=kt(t),this.each(function(){if(s)for(o=ce(this),i=0;i<e.length;i++)r=e[i],o.hasClass(r)?o.removeClass(r):o.addClass(r);else void 0!==t&&"boolean"!==a||((r=Ct(this))&&_.set(this,"__className__",r),this.setAttribute&&this.setAttribute("class",r||!1===t?"":_.get(this,"__className__")||""))}))}...

eout","checkOn","optSelected","radioValue","boolHook","removeAttr","nType","attrHooks","attrNames","getter","lowercaseName","rfocusable","rclickable","stripAndCollapse","getClass","classesToArray","removeProp","propFix","tabindex","for","class","addClass","classNames","curValue","finalValue","removeClass","toggleClass","stateVal","isValidValue","hasClass","rreturn","valHooks","optionSet","rquery","parseXML","parserErrorElem","DOMParser","parseFromString","rfocusMorph","stopPropagationCallback","...

        in eager mode.
    *   Callbacks are supported in `MultiWorkerMirroredStrategy`.
    *   Disable `run_eagerly` and distribution strategy if there are symbolic
        tensors added to the model using `add_metric` or `add_loss`.
    *   Loss and gradients should now more reliably be correctly scaled w.r.t.
        the global batch size when using a `tf.distribute.Strategy`.

eout","checkOn","optSelected","radioValue","boolHook","removeAttr","nType","attrHooks","attrNames","getter","lowercaseName","rfocusable","rclickable","stripAndCollapse","getClass","classesToArray","removeProp","propFix","tabindex","for","class","addClass","classNames","curValue","finalValue","removeClass","toggleClass","stateVal","isValidValue","hasClass","rreturn","valHooks","optionSet","rquery","parseXML","parserErrorElem","DOMParser","parseFromString","rfocusMorph","stopPropagationCallback","...