Description
Pandas version checks
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I have checked that this issue has not already been reported.
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I have confirmed this bug exists on the latest version of pandas.
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I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
import pandas as pd
pd.DataFrame([[False, 1]], columns=["a", "b"]).set_index(['a']).to_hdf("/tmp/a.hdf", "a")Issue Description
When saving to_hdf a dataframe which has a boolean index I get an assertion error from inside pytables
4943 return IndexCol(
4944 name, values=converted, kind=kind, typ=atom, index_name=index_name
4945 )
4946 else:
-> 4947 assert isinstance(converted, np.ndarray) and converted.dtype == object
4948 assert kind == "object", kind
4949 atom = _tables().ObjectAtom()
AssertionError:
However, when saving a dataframe with no boolean in the index this works as expected.
Additionally saving dataframes with booleans in the index worked in 1.4.4
Expected Behavior
import pandas as pd
pd.DataFrame([[False, 1]], columns=["a", "b"]).set_index(['a']).to_hdf("/tmp/a.hdf", "a")
works identically to
import pandas as pd
pd.DataFrame([['False', 1]], columns=["a", "b"]).set_index(['a']).to_hdf("/tmp/a.hdf", "a")
Installed Versions
INSTALLED VERSIONS
commit : 87cfe4e
python : 3.10.7.final.0
python-bits : 64
OS : Linux
OS-release : 5.4.117.hrtdev
Version : #3 SMP Tue May 11 13:44:03 EDT 2021
machine : x86_64
processor :
byteorder : little
LC_ALL :
LANG : en_US.UTF-8
LOCALE : en_US.UTF-8
pandas : 1.5.0
numpy : 1.23.2
pytz : 2022.1
dateutil : 2.8.2
setuptools : 62.1.0
pip : 22.2.2
Cython : 0.29.30
pytest : 7.1.2
hypothesis : 6.52.3
sphinx : 5.0.2
blosc : 1.10.6
feather : None
xlsxwriter : None
lxml.etree : 4.9.1
html5lib : 1.1
pymysql : 1.0.2
psycopg2 : 2.9.3
jinja2 : 3.1.2
IPython : 8.4.0
pandas_datareader: None
bs4 : 4.11.1
bottleneck : 1.3.5
brotli : 1.0.9
fastparquet : 0.8.1
fsspec : 2022.5.0
gcsfs : None
matplotlib : 3.5.2
numba : 0.56.2
numexpr : 2.8.3
odfpy : None
openpyxl : 3.0.10
pandas_gbq : None
pyarrow : 7.0.0
pyreadstat : None
pyxlsb : 1.0.9
s3fs : None
scipy : 1.9.1
snappy : None
sqlalchemy : 1.4.39
tables : 3.7.0
tabulate : 0.8.10
xarray : 2022.6.0
xlrd : 2.0.1
xlwt : None
zstandard : 0.18.0
tzdata : 2022.1