我通过交易平台获得此JSON数据：
{u'prices': bid ask \
Open High Low Close Open High
DateTime
2016:01:01-05:00:00 10373.0 10580.0 9235.0 9703.0 10373.0 10601.0
2016:02:01-05:00:00 9673.0 9906.0 9196.0 9675.0 9713.0 9929.0
2016:03:01-05:00:00 9726.0 11036.0 9646.0 10899.0 9784.0 11045.0
2016:04:01-05:00:00 10838.0 11234.0 9247.0 9371.0 10844.0 11243.0
2016:05:01-05:00:00 9374.0 10068.0 8936.0 9983.0 9400.0 10077.0
2016:06:01-05:00:00 9991.0 9994.0 9146.0 9536.0 9999.0 10044.0
2016:07:01-05:00:00 9526.0 10462.0 9433.0 10418.0 9544.0 10472.0
2016:08:01-05:00:00 10428.0 11018.0 10334.0 10595.0 10444.0 11027.0
2016:09:01-05:00:00 10610.0 11612.0 10171.0 11293.0 10603.0 11622.0
2016:10:01-05:00:00 11297.0 12180.0 11197.0 11350.0 11305.0 12192.0
2016:11:01-04:00:00 11374.0 11374.0 10404.0 11055.0 11358.0 11387.0
2016:12:01-05:00:00 11061.0 11795.0 10825.0 11568.0 11069.0 11804.0
2017:01:01-05:00:00 11572.0 12555.0 11474.0 12498.0 11623.0 12565.0
2017:02:01-05:00:00 12447.0 13743.0 12447.0 13698.0 12506.0 13752.0
2017:03:01-05:00:00 13701.0 14445.0 13701.0 14366.0 13709.0 14454.0
2017:04:01-05:00:00 14306.0 14541.0 14002.0 14361.0 14434.0 14550.0
2017:05:01-05:00:00 14366.0 15696.0 14341.0 15278.0 14374.0 15739.0
2017:06:01-05:00:00 15236.0 15592.0 14161.0 14404.0 15286.0 15604.0
2017:07:01-05:00:00 14401.0 15432.0 13309.0 15422.0 14480.0 15443.0
spread last \
Low Close Open High Low Close Open High
DateTime
2016:01:01-05:00:00 9244.0 9714.0 0.0 21.0 9.0 11.0 None None
2016:02:01-05:00:00 9215.0 9691.0 40.0 23.0 19.0 16.0 None None
2016:03:01-05:00:00 9737.0 10911.0 58.0 9.0 91.0 12.0 None None
2016:04:01-05:00:00 9256.0 9382.0 6.0 9.0 9.0 11.0 None None
2016:05:01-05:00:00 8949.0 10000.0 26.0 9.0 13.0 17.0 None None
2016:06:01-05:00:00 9155.0 9559.0 8.0 50.0 9.0 23.0 None None
2016:07:01-05:00:00 9442.0 10431.0 18.0 10.0 9.0 13.0 None None
2016:08:01-05:00:00 10372.0 10609.0 16.0 9.0 38.0 14.0 None None
2016:09:01-05:00:00 10186.0 11304.0 -7.0 10.0 15.0 11.0 None None
2016:10:01-05:00:00 11234.0 11359.0 8.0 12.0 37.0 9.0 None None
2016:11:01-04:00:00 10413.0 11070.0 -16.0 13.0 9.0 15.0 None None
2016:12:01-05:00:00 10834.0 11587.0 8.0 9.0 9.0 19.0 None None
2017:01:01-05:00:00 11483.0 12512.0 51.0 10.0 9.0 14.0 None None
2017:02:01-05:00:00 12472.0 13713.0 59.0 9.0 25.0 15.0 None None
2017:03:01-05:00:00 13709.0 14379.0 8.0 9.0 8.0 13.0 None None
2017:04:01-05:00:00 14011.0 14374.0 128.0 9.0 9.0 13.0 None None
2017:05:01-05:00:00 14374.0 15289.0 8.0 43.0 33.0 11.0 None None
2017:06:01-05:00:00 14194.0 14414.0 50.0 12.0 33.0 10.0 None None
2017:07:01-05:00:00 14250.0 15438.0 79.0 11.0 941.0 16.0 None None
Low Close Volume
DateTime
2016:01:01-05:00:00 None None 708512208
2016:02:01-05:00:00 None None 496710765
2016:03:01-05:00:00 None None 445406899
2016:04:01-05:00:00 None None 468757810
2016:05:01-05:00:00 None None 469025253
2016:06:01-05:00:00 None None 437172919
2016:07:01-05:00:00 None None 448678799
2016:08:01-05:00:00 None None 359985844
2016:09:01-05:00:00 None None 594549768
2016:10:01-05:00:00 None None 409916710
2016:11:01-04:00:00 None None 431415176
2016:12:01-05:00:00 None None 361497431
2017:01:01-05:00:00 None None 332480596
2017:02:01-05:00:00 None None 315665923
2017:03:01-05:00:00 None None 314834247
2017:04:01-05:00:00 None None 212274515
2017:05:01-05:00:00 None None 339033935
2017:06:01-05:00:00 None None 367915336
2017:07:01-05:00:00 None None 193057585 ,
u'instrumentType': u'SHARES',
u'allowance': { u'remainingAllowance': 9531,
u'allowanceExpiry': 32328,
u'totalAllowance': 10000
}
}
我无法弄清楚如何拉日期时间？我可以通过以下方式提取开放率：
open = parsed_json_data["prices"]['bid']['Open']
但是当我尝试为DateTime做同样的事情时：
datetime = parsed_json_data["prices"]['bid']['DateTime']
我得到KeyError。我怎么去拉日期时间？
答案 0 :(得分：5)
parsed_json_data["prices"]似乎是pandas DataFrame，DateTime是其索引。您可以parsed_json_data["prices"].index访问它。