Python Pandas – 判断DateTimeIndex中的日期是否为月末

要检查DateTimeIndex中的日期是否为月末，请使用 DateTimeIndex.is_month_end 属性。

首先，导入所需的库-

import pandas as pd

创建一个带有6个周期和频率为D即天的DatetimeIndex-

datetimeindex = pd.date_range('2021-9-15 06:40:35', periods=6, tz='Australia/Adelaide', freq='15D')

显示DateTimeIndex-

print("DateTimeIndex...\n", datetimeindex)

检查DateTimeIndex中的日期是否为月末-

print("\nCheck whether the date in DateTimeIndex is the last day of the month...\n",
datetimeindex.is_month_end)

示例

以下是代码-

import pandas as pd

# DatetimeIndex with period 6 and frequency as D i.e. days
# The timezone is Australia/Adelaide
datetimeindex = pd.date_range('2021-9-15 06:40:35', periods=6, tz='Australia/Adelaide', freq='15D')

# display DateTimeIndex
print("DateTimeIndex...\n", datetimeindex)

# display DateTimeIndex frequency
print("DateTimeIndex frequency...\n", datetimeindex.freq)

# 检查DateTimeIndex中的日期是否为月末
print("\nCheck whether the date in DateTimeIndex is the last day of the month...\n",
datetimeindex.is_month_end)

输出

这将产生以下结果-

DateTimeIndex...
DatetimeIndex(['2021-09-15 06:40:35+09:30', '2021-09-30 06:40:35+09:30',
'2021-10-15 06:40:35+10:30', '2021-10-30 06:40:35+10:30',
'2021-11-14 06:40:35+10:30', '2021-11-29 06:40:35+10:30'],
dtype='datetime64[ns, Australia/Adelaide]', freq='15D')
DateTimeIndex frequency...
<15 * Days>

检查DateTimeIndex中的日期是否为月末...
[False True False False False False]