python數據處理——獲得datetime類型的index

dates = pd.date_range('2010-01-01','2010-12-31')

就能得到一段時間序列index

DatetimeIndex(['2010-10-01', '2010-10-02', '2010-10-03', '2010-10-04',
               '2010-10-05', '2010-10-06', '2010-10-07', '2010-10-08',
               '2010-10-09', '2010-10-10',
               ...
               '2012-12-21', '2012-12-22', '2012-12-23', '2012-12-24',
               '2012-12-25', '2012-12-26', '2012-12-27', '2012-12-28',
               '2012-12-29', '2012-12-30'],
              dtype='datetime64[ns]', length=822, freq='D')

就像上面這樣