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pd.get_dummies
bool[pyarrow]
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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.
import pandas as pd import io data = '''name,x,y matt a,10,20 fred b,20,1 jeff c,2,3 lisa d,5,7 adam e,23,1''' df = pd.read_csv(io.StringIO(data), engine='pyarrow', dtype_backend='pyarrow') pd.get_dummies(df).dtypes
The result of the above code has the name_* columns with type bool instead of bool[pyarrow]
bool
Pyarrow types please
commit : e86ed37 python : 3.10.13.final.0 python-bits : 64 OS : Darwin OS-release : 21.6.0 Version : Darwin Kernel Version 21.6.0: Wed Aug 10 14:28:23 PDT 2022; root:xnu-8020.141.5~2/RELEASE_ARM64_T6000 machine : arm64 processor : arm byteorder : little LC_ALL : en_US.UTF-8 LANG : None LOCALE : en_US.UTF-8
pandas : 2.1.1 numpy : 1.23.5 pytz : 2023.3 dateutil : 2.8.2 setuptools : 67.6.1 pip : 23.2.1 Cython : 3.0.4 pytest : 7.2.0 hypothesis : 6.81.2 sphinx : None blosc : None feather : None xlsxwriter : 3.1.2 lxml.etree : 4.9.2 html5lib : 1.1 pymysql : None psycopg2 : None jinja2 : 3.1.2 IPython : 8.8.0 pandas_datareader : None bs4 : 4.11.1 bottleneck : None dataframe-api-compat: None fastparquet : None fsspec : 2023.3.0 gcsfs : None matplotlib : 3.6.2 numba : 0.56.4 numexpr : 2.8.4 odfpy : None openpyxl : 3.0.10 pandas_gbq : None pyarrow : 13.0.0 pyreadstat : None pyxlsb : None s3fs : None scipy : 1.10.0 sqlalchemy : 2.0.21 tables : None tabulate : 0.9.0 xarray : None xlrd : 2.0.1 zstandard : None tzdata : 2023.3 qtpy : None pyqt5 : None
The text was updated successfully, but these errors were encountered:
str.get_dummies()
pd.get_dummies()
Successfully merging a pull request may close this issue.
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
Issue Description
The result of the above code has the name_* columns with type
bool
instead ofbool[pyarrow]
Expected Behavior
Pyarrow types please
Installed Versions
INSTALLED VERSIONS
commit : e86ed37
python : 3.10.13.final.0
python-bits : 64
OS : Darwin
OS-release : 21.6.0
Version : Darwin Kernel Version 21.6.0: Wed Aug 10 14:28:23 PDT 2022; root:xnu-8020.141.5~2/RELEASE_ARM64_T6000
machine : arm64
processor : arm
byteorder : little
LC_ALL : en_US.UTF-8
LANG : None
LOCALE : en_US.UTF-8
pandas : 2.1.1
numpy : 1.23.5
pytz : 2023.3
dateutil : 2.8.2
setuptools : 67.6.1
pip : 23.2.1
Cython : 3.0.4
pytest : 7.2.0
hypothesis : 6.81.2
sphinx : None
blosc : None
feather : None
xlsxwriter : 3.1.2
lxml.etree : 4.9.2
html5lib : 1.1
pymysql : None
psycopg2 : None
jinja2 : 3.1.2
IPython : 8.8.0
pandas_datareader : None
bs4 : 4.11.1
bottleneck : None
dataframe-api-compat: None
fastparquet : None
fsspec : 2023.3.0
gcsfs : None
matplotlib : 3.6.2
numba : 0.56.4
numexpr : 2.8.4
odfpy : None
openpyxl : 3.0.10
pandas_gbq : None
pyarrow : 13.0.0
pyreadstat : None
pyxlsb : None
s3fs : None
scipy : 1.10.0
sqlalchemy : 2.0.21
tables : None
tabulate : 0.9.0
xarray : None
xlrd : 2.0.1
zstandard : None
tzdata : 2023.3
qtpy : None
pyqt5 : None
The text was updated successfully, but these errors were encountered: