Python Pandas – 从DateTimeIndex提取频率对象并作为字符串输出

要从DateTimeIndex提取频率对象作为字符串进行输出，使用Pandas中的 DateTimeIndex.freqstr 属性即可。

首先，导入所需的库−

import pandas as pd

创建一个周期为6，频率为D即每天的DatetimeIndex−

datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=6, tz='Australia/Adelaide', freq='D')

显示DatetimeIndex −

print("DateTimeIndex...\n", datetimeindex)

显示DatetimeIndex频率作为字符串−

print("DateTimeIndex frequency as string...\n", datetimeindex.freqstr)

更多Pandas文章，请阅读：Pandas教程

示例

以下是代码−

import pandas as pd

# 创建一个周期为6，频率为D即每天的DatetimeIndex
# 时区设置为Australia/Adelaide
datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=6, tz='Australia/Adelaide', freq='D')

# 显示DatetimeIndex
print("DateTimeIndex...\n", datetimeindex)

# 显示DatetimeIndex频率
print("DateTimeIndex frequency...\n", datetimeindex.freq)

# 显示DatetimeIndex频率作为字符串
print("DateTimeIndex frequency as string...\n", datetimeindex.freqstr)

输出

输出结果如下所示−

DateTimeIndex...
DatetimeIndex(['2021-10-20 02:30:50+10:30', '2021-10-21 02:30:50+10:30',
'2021-10-22 02:30:50+10:30', '2021-10-23 02:30:50+10:30',
'2021-10-24 02:30:50+10:30', '2021-10-25 02:30:50+10:30'],
dtype='datetime64[ns, Australia/Adelaide]', freq='D')

DateTimeIndex frequency...
<Day>

DateTimeIndex frequency as string...
D