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   "id": "dc9a90a7-162d-4f7c-9388-fd23b039ee36",
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   "outputs": [],
   "source": [
    "import pandas as pd \n",
    "import numpy as np\n",
    "\n",
    "def method_a():\n",
    "    print(\"method_a print hello world!\")\n",
    "    "
   ]
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  {
   "cell_type": "code",
   "execution_count": null,
   "id": "193ae985-8f61-4c31-9a12-b82ded63eaf2",
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