Demo Pandas for time stepping with hdf

gistfile1.txt

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     "input": [
      "N = 10\n",
      "import pandas as pd\n",
      "import os\n",
      "filename = './store.h5'\n",
      "store = pd.HDFStore(filename)\n",
      "store.close()\n",
      "del store"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 74
    },
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     "cell_type": "code",
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     "input": [
      "def write_data(df, step, filename):\n",
      "    with pd.get_store(filename) as store:\n",
      "        store['step {:d}'.format(step)] = df\n",
      "\n",
      "for step in range(3):\n",
      "    phi = np.random.random(N)\n",
      "    df = pd.DataFrame({'phi' : phi})\n",
      "    write_data(df, step, filename)\n",
      "    \n",
      "with pd.get_store(filename) as store:\n",
      "    print store['step 0']"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "        phi\n",
        "0  0.522170\n",
        "1  0.536279\n",
        "2  0.050037\n",
        "3  0.614091\n",
        "4  0.280991\n",
        "5  0.805066\n",
        "6  0.573573\n",
        "7  0.005430\n",
        "8  0.901790\n",
        "9  0.951810\n"
       ]
      }
     ],
     "prompt_number": 75
    }
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