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BUG: mapping categorical with single category to boolean returns category instead of bool dtype

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

CategoricalCategorical Data TypeCategorical Data Type

Status: Open.

#61719 In pandas-dev/pandas;

· kdebrab opened on Jun 27, 2025

BUG: Incorrect freqstr "D" after timezone conversion

Bug

DatetimeDatetime data dtypeDatetime data dtype

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#51716 In pandas-dev/pandas;

· kdebrab opened on Mar 1, 2023

BUG: AmbiguousTimeError when resampling "Atlantic/Azores" to weekly resolution

Bug

Resampleresample methodresample method

TimezonesTimezone data dtypeTimezone data dtype

Status: Open.

#51211 In pandas-dev/pandas;

· kdebrab opened on Feb 7, 2023

BUG: read_parquet empty DataFrame with MultiIndex column fails with "AttributeError: 'dict' object has no attribute 'dtype'"

Bug

IO Parquetparquet, featherparquet, feather

MultiIndex

Status: Open.

#40173 In pandas-dev/pandas;

· kdebrab opened on Mar 2, 2021

Incorrect result with DateOffset.rollback for normalize=True

Bug

FrequencyDateOffsetsDateOffsets

Status: Open.

#32616 In pandas-dev/pandas;

· kdebrab opened on Mar 11, 2020

KeyError when setting values with loc

Bug

DatetimeDatetime data dtypeDatetime data dtype

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

Status: Open.

#15815 In pandas-dev/pandas;

· kdebrab opened on Mar 27, 2017

align with broadcast_axis specified always uses inner join when aligning dataframe and series on other axis.

Bug

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Open.

#13194 In pandas-dev/pandas;

· kdebrab opened on May 16, 2016