访问 pd.TimeSeries 的频率属性

Question

如何访问 pd.TimeSeries 的频率属性

例如，这里我想得到“H”：

rng = pd.date_range('1/1/2011', periods=72, freq='H')
ts = pd.Series(np.random.randn(len(rng)), index=rng)
ts.head()

2011-01-01 00:00:00    0.469112
2011-01-01 01:00:00   -0.282863
2011-01-01 02:00:00   -1.509059
2011-01-01 03:00:00   -1.135632
2011-01-01 04:00:00    1.212112
Freq: H, dtype: float64

Answer 1

使用DatetimeIndex.freqstr:

print (ts.index.freqstr)
H