{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 异步事件处理器\n",
    "\n",
    "大多数元素也支持异步事件处理器。\n",
    "\n",
    "注意：您还可以将 `functools.partial` 传递给 `on_click` 属性，以包装带参数的异步函数。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<nicegui.elements.button.Button at 0x29e70bcc450>"
      ]
     },
     "execution_count": 1,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import asyncio\n",
    "from nicegui import ui\n",
    "\n",
    "async def async_task():\n",
    "    ui.notify('Asynchronous task started')\n",
    "    await asyncio.sleep(5)\n",
    "    ui.notify('Asynchronous task finished')\n",
    "\n",
    "ui.button('start async task', on_click=async_task)\n",
    "\n",
    "# ui.run()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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