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