Python Pandas - 从 Period 对象获取一年中的哪一天

要从Period对象获取一年中的哪一天，请使用period.dayofyear 属性。

首先，导入所需的库-

import pandas as pd

的pandas.Period代表的一段时间。创建两个Period对象-

period1 = pd.Period("2020-09-23") period2 = pd.Period(freq="D", year = 2021, month = 7, day = 16, hour = 2, minute = 35)

显示Period对象-

print("Period1...\n", period1) print("Period2...\n", period2)

从两个Period对象中获取一年中的某一天-

res1 = period1.dayofyear res2 = period2.dayofyear

示例

以下是代码-

import pandas as pd #Thepandas.Period表示一段时间 #创建两个Period对象 period1 = pd.Period("2020-09-23") period2 = pd.Period(freq="D", year = 2021, month = 7, day = 16, hour = 2, minute = 35) #显示Period对象 print("Period1...\n", period1) print("Period2...\n", period2) #从两个Period对象中获取一年中的哪一天 res1 = period1.dayofyear res2 = period2.dayofyear #从两个Period对象返回一年中的第几天 #返回值范围在1到365之间（常规年）和1到366之间（闰年） print("\nDay of the year from the 1st Period object ...\n", res1) print("\nDay of the year from the 2nd Period object...\n", res2)输出结果

这将产生以下代码-

Period1... 2020-09-23 Period2... 2021-07-16 Day of the year from the 1st Period object ... 267 Day of the year from the 2nd Period object... 197