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   "source": [
    "本章のコードは、JupyteNotebookではなく、GoogleColaboratoryで入力するコードですが、コピペできるように公開しておきます。"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## A.3.1 データの読み込み"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# ファイル一覧の表示\n",
    "!ls\n",
    "\n",
    "# pandasで読み込み\n",
    "import pandas as pd\n",
    "df_test = pd.read_csv('test.csv')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### A.3.1.2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "!pip install -U -q PyDrive\n",
    "\n",
    "from pydrive.auth import GoogleAuth\n",
    "from pydrive.drive import GoogleDrive\n",
    "from google.colab import auth\n",
    "from oauth2client.client import GoogleCredentials\n",
    "\n",
    "auth.authenticate_user()\n",
    "gauth = GoogleAuth()\n",
    "gauth.credentials = GoogleCredentials.get_application_default()\n",
    "drive = GoogleDrive(gauth)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "id = 'hoge'  # 1.でコピーしたid= より後の部分\n",
    "downloaded = drive.CreateFile({'id': id})\n",
    "downloaded.GetContentFile('test.csv') # test.csvを適当な文字列に変更\n",
    "\n",
    "# pandasで読み込み\n",
    "import pandas as pd\n",
    "# test.csvを先ほど書き換えた適当な文字列に変更\n",
    "df_test = pd.read_csv('test.csv') "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## A.3.2 データのダウンロード"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "#データフレームをcsv形式で書き出す\n",
    "df_submission.to_csv(‘submission.csv', index=False)\n",
    "\n",
    "#GoogleColaboratory特有のライブラリを使い、ダウンロードする\n",
    "from google.colab import files\n",
    "files.download('submission.csv')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## A.4 matplotlibで日本語を使う方法"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "!apt-get -y install fonts-ipafont-gothic\n",
    "import matplotlib.pyplot as plt\n",
    "plt.rcParams['font.family'] = 'IPAPGothic'\n",
    "\n",
    "# 以下具体例\n",
    "plt.plot([1,2])\n",
    "plt.title('日本語が使えるよ')"
   ]
  }
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