Skip to content

BUG: Inconsistency of BooleanArray.__and__ with pd.NA and [pd.NA] #63095

@cmp0xff

Description

@cmp0xff

Pandas version checks

  • I have checked that this issue has not already been reported.

  • I have confirmed this bug exists on the latest version of pandas.

  • I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

from typing import reveal_type
import pandas as pd

b = pd.array([True, False])

reveal_type(b & pd.NA)  # works
reveal_type(b & [pd.NA, False])  # TypeError: boolean value of NA is ambiguous

Issue Description

BooleanArray.__and__(pd.NA) works, but BooleanArray.__and__([pd.NA]) fails. This was found in pandas-dev/pandas-stubs#1480

Expected Behavior

BooleanArray.__and__([pd.NA]) can just give pd.NA.

Installed Versions

INSTALLED VERSIONS

commit : f60bf95
python : 3.11.13
python-bits : 64
OS : Windows
OS-release : 10
Version : 10.0.26200
machine : AMD64
processor : AMD64 Family 25 Model 116 Stepping 1, AuthenticAMD
byteorder : little
LC_ALL : None
LANG : en_US.UTF-8
LOCALE : Czech_Czechia.1252

pandas : 3.0.0.dev0+2338.gf60bf958da.dirty
numpy : 2.2.6
dateutil : 2.9.0.post0
pip : 25.2
Cython : 3.1.3
sphinx : 8.2.3
IPython : 9.4.0
adbc-driver-postgresql: None
adbc-driver-sqlite : None
bs4 : 4.13.5
bottleneck : 1.5.0
fastparquet : 2024.11.0
fsspec : 2025.7.0
html5lib : 1.1
hypothesis : 6.138.3
gcsfs : 2025.7.0
jinja2 : 3.1.6
lxml.etree : 6.0.1
matplotlib : 3.10.5
numba : 0.61.2
numexpr : 2.10.2
odfpy : None
openpyxl : 3.1.5
psycopg2 : 2.9.10
pymysql : 1.4.6
pyarrow : 19.0.1
pyiceberg : 0.9.1
pyreadstat : 1.3.1
pytest : 8.4.1
python-calamine : None
pytz : 2025.2
pyxlsb : 1.0.10
s3fs : 2025.7.0
scipy : 1.16.1
sqlalchemy : 2.0.43
tables : 3.10.2
tabulate : 0.9.0
xarray : 2025.8.0
xlrd : 2.0.1
xlsxwriter : 3.2.5
zstandard : 0.23.0
qtpy : None
pyqt5 : None

Metadata

Metadata

Assignees

No one assigned

    Labels

    BugDeprecateFunctionality to remove in pandasNA - MaskedArraysRelated to pd.NA and nullable extension arraysNumeric OperationsArithmetic, Comparison, and Logical operations

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions