Python pandas.period_range()方法
Python是一种进行数据分析的伟大语言,主要是因为以数据为中心的Python包的奇妙生态系统。Pandas就是这些包中的一个,它使导入和分析数据变得更加容易。
pandas.period_range()是Pandas的一个通用函数,用于返回一个固定频率的PeriodIndex,日(日历)为默认频率。
语法: pandas.period_range(start=None, end=None, periods=None, freq=None, name=None)
参数:
start:生成期的左边界
end:生成期的右边界
periods:产生的周期数
freq :频率别名
name :产生的PeriodIndex的名称。
返回值: PeriodIndex
代码 #1:
# importing pandas as pd
import pandas as pd
# period_range with freq = day
per1 = pd.period_range(start ='2018-12-20',
end ='2019-01-01', freq ='D')
# period_range with freq = month
per2 = pd.period_range(start ='2018-12-20',
end ='2019-12-01', freq ='M')
print(per1, "\n\n", per2)
输出:
代码 #2:
# importing pandas as pd
import pandas as pd
# period_range with freq = day
per1 = pd.period_range(start ='2018-12-20',
end ='2019-01-01', freq ='D')
for val in per1:
print(val)
输出:
代码 #3:
# importing pandas as pd
import pandas as pd
# Calling with pd.Period
per = pd.period_range(start = pd.Period('2017Q1', freq ='Q'),
end = pd.Period('2018Q2', freq ='Q'), freq ='M')
for val in per:
print(val)
输出: