{"cells":[
 {
  "cell_type": "code",
  "execution_count": null,
  "metadata": {
   "collapsed": false
  },
  "outputs": [],
  "source": "import pandas as pd\nimport numpy as np\n\nreaddata=pd.read_csv('../input/train.csv',nrows=1000000)\n#head(readdata)\n#readdata.shape\n\ngrouped = readdata.groupby('Semana')\n#grouped['Venta_hoy'].aggregate(np.max)\nlen(grouped.groups)\n#nationWins=grouped.size()\nnationWins.head()"
 }
],"metadata":{"kernelspec":{"display_name":"Python 3","language":"python","name":"python3"}}, "nbformat": 4, "nbformat_minor": 0}