BUG: USFederalHolidayCalendar.holidays inconsistently returns Index and not DateTimeIndex · Issue #49075 · pandas-dev/pandas (original) (raw)

Pandas version checks

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Reproducible Example

import datetime from pandas.tseries.holiday import USFederalHolidayCalendar cal = USFederalHolidayCalendar() cal.holidays(start=datetime.date(2018,8,1), end=datetime.date(2018,8,31)) Index([], dtype='object')

Issue Description

The returned result should be type DatetimeIndex.
Non-empty results are indeed of type DatetimeIndex. Furthermore, certain other empty results from other ranges (seen below in expected behavior) also have type DatetimeIndex.
The return type is inconsistent.

Expected Behavior

>>> cal.holidays(start=datetime.date(2020,8,1), end=datetime.date(2020,8,31))
DatetimeIndex([], dtype='datetime64[ns]', freq=None)
>>> cal.holidays(start=datetime.date(2019,8,1), end=datetime.date(2019,8,31))
DatetimeIndex([], dtype='datetime64[ns]', freq=None)

Installed Versions

INSTALLED VERSIONS ------------------ commit : 87cfe4epython : 3.10.6.final.0 python-bits : 64 OS : Linux OS-release : 5.10.102.1-microsoft-standard-WSL2 Version : #1 SMP Wed Mar 2 00:30:59 UTC 2022 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : C.UTF-8 LOCALE : en_US.UTF-8

pandas : 1.5.0
numpy : 1.23.3
pytz : 2022.4
dateutil : 2.8.2
setuptools : 65.4.1
pip : 22.2.2