date=['2017-6-26', '2017-6-27'] dates=pd.to_datetime() ts = pd.Series(np.random.randn(2), index=dates) 下列与其他项结果不一样的语句为____
A. ts[0]
B. ts.index[0]
C. ts['2017-6-26']
D. ts['2017/6/26']
E. ts['6/26/2017']
F. ts['26/6/2017']
查看答案
下列不能正确执行的语句是____
A. index = pd.date_range('2012-04-01', '2012-05-01',periods=20)
B. index = pd.date_range(start='2012-04-01', periods=20)
C. index = pd.date_range(end= '2012-05-01',periods=20)
D. index = pd.date_range('2012-04-01', '2012-05-01')
from pandas.tseries.offsets import Day, MonthEnd now=pd.to_datetime('2017-12-01 13:00:12') s=now + MonthEnd(-1) 结果为____ Timestamp('2017-11-01 00:00:00')
A. Timestamp('2017-12-30 13:00:12')
B. Timestamp('2017-11-30 13:00:12')
C. Timestamp('2017-11-01 13:00:12')
下列表达正确的是()
A. pd.date_range('2000-01-01', '2000-01-03 23:59', freq='4h30T')
B. pd.date_range('2000-01-01', '2000-01-03 23:59', freq='4h30m')
C. pd.date_range('2000-01-01', '2000-01-03 23:59', freq='4h30min')
D. pd.date_range('2000-01-01', '2000-01-03 23:59', freq='4h30minute')
以下语句执行的结果为 pd.date_range('2012-05-02 12:56:31', periods=5, normalize=True) DatetimeIndex(['2012-05-02 12:56:31', '2012-05-03 12:56:31', '2012-05-04 12:56:31', '2012-05-05 12:56:31', '2012-05-06 12:56:31'], dtype='datetime64[]', freq='D')( )
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