C:\Python27\lib\site-packages\QSTK\qstkutil\qsdateutil.py:36: FutureWarning: TimeSeries is deprecated. Please use Series
  return pd.TimeSeries(index=dates, data=dates)
Traceback (most recent call last):
  File "C:\Users\David\Desktop\Python\Coursera\Computational Finance\HomeWork1\PredJson.py", line 21, in <module>
    print grouped.get_group(asset)[['ohlcv_start_date'> 1446012000 ] & ['ohlcv_start_date'< 1452556800]]
TypeError: unsupported operand type(s) for &: 'list' and 'list'
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