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蟒蛇|熊猫. period_range()方法

原文:https://www.geesforgeks.org/python-pandas-period_range-method/

Python 是进行数据分析的优秀语言,主要是因为以数据为中心的 python 包的奇妙生态系统。Pandas 就是其中之一,它让数据的导入和分析变得更加容易。

**pandas.period_range()**是 Pandas 中的通用函数之一,用于返回固定频率的 PeriodIndex,默认频率为日(日历)。

语法: pandas.to_numeric(arg,错误='raise ',downcast=None)

参数: 开始:生成周期的左界 结束:生成周期的右界 周期:生成的周期数 频率:频率别名 名称:结果周期索引的名称

返回:周期索引

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:



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