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   "source": [
    "df = pd.DataFrame(['One', 'Two', 'Three'], index=['one', 'two', 'nan'])"
   ]
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   "execution_count": 16,
   "metadata": {
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   "cell_type": "code",
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   "source": [
    "df.to_hdf('test.h5', key='df')"
   ]
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  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {
    "collapsed": true
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   "outputs": [],
   "source": [
    "df2 = pd.read_hdf('/tmp/test.h5', key='df')"
   ]
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   "execution_count": 19,
   "metadata": {
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