poorList = [datetime.date(2016, 5, 2), datetime.date(2016, 8, 26), datetime
    .date(2016, 6, 9), datetime.date(2016, 3, 4)]
dateForm.index = pd.DatetimeIndex(poorList)
print(dateForm.index)
DatetimeIndex(['2016-05-02', '2016-08-26', '2016-06-09', '2016-03-04'],
    dtype='datetime64[ns]', freq=None)
python I want to set_index dateFrame with datetime