Python Pandas CustomBusinessHour – Roll提供的日期后退

使用Pandas中的CustomBusinessHour.rollback()方法来将提供的日期后退。首先，导入所需的库−

import pandas as pd

将时间戳对象设置到Pandas中−

timestamp = pd.Timestamp('2021-12-20 08:35:10')

创建CustomBusinessHour Offset。CustomBusinessHour是DateOffset子类−

cbhOffset = pd.tseries.offsets.CustomBusinessHour(n = 5, weekmask = 'Mon Tue Wed Fri')

将偏移量添加到时间戳并显示更新后的时间戳−

print("\nUpdated Timestamp...\n",timestamp + cbhOffset)

如果不处于偏移量上，则向后滚动−

roll_back = cbhOffset.rollback(pd.Timestamp('2021-12-18 08:35:10'))

显示结果−

print("\nRoll Backward Result...\n",roll_back)

示例

以下是代码−

import pandas as pd

# 将时间戳对象设置到Pandas中
timestamp = pd.Timestamp('2021-12-20 08:35:10')

# 显示时间戳
print("Timestamp...\n",timestamp)

# 创建CustomBusinessHour Offset
# CustomBusinessHour是DateOffset子类
# 有效工作日的Weekmask
cbhOffset = pd.tseries.offsets.CustomBusinessHour(n = 5, weekmask = 'Mon Tue Wed Fri')

# 显示CustomBusinessHour Offset
print("\nCustomBusinessHour Offset...\n",cbhOffset)

# 将偏移量添加到时间戳并显示更新后的时间戳
print("\nUpdated Timestamp...\n",timestamp + cbhOffset)

# 如果不在偏移量上，则向后滚动
roll_back = cbhOffset.rollback(pd.Timestamp('2021-12-18 08:35:10'))

# 显示结果
print("\nRoll Backward Result...\n",roll_back)

输出

这将产生以下代码 −

Timestamp...
 2021-12-20 08:35:10

CustomBusinessHour Offset...
 <5 * CustomBusinessHours: CBH=09:00-17:00>

Updated Timestamp...
 2021-12-20 14:00:00

Roll Backward Result...
 2021-12-17 17:00:00