BUG: To/read parquet with None values in partition cols fail #55400
Labels
Bug
IO Parquet
parquet, feather
Needs Triage
Issue that has not been reviewed by a pandas team member
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
It raises this:
Expected Behavior
Considering that this works (with
fastparquet
):and this also works:
I would expect the default
read_parquet
to be able to read something it dumped before.Installed Versions
INSTALLED VERSIONS
commit : e86ed37
python : 3.11.5.final.0
python-bits : 64
OS : Linux
OS-release : 5.10.179-168.710.amzn2.x86_64
Version : #1 SMP Mon May 22 23:10:22 UTC 2023
machine : x86_64
processor :
byteorder : little
LC_ALL : None
LANG : C.UTF-8
LOCALE : en_US.UTF-8
pandas : 2.1.1
numpy : 1.24.3
pytz : 2023.3.post1
dateutil : 2.8.2
setuptools : 68.2.2
pip : 23.2.1
Cython : None
pytest : 7.4.2
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : 2.9.8
jinja2 : 3.1.2
IPython : 8.15.0
pandas_datareader : None
bs4 : 4.12.2
bottleneck : None
dataframe-api-compat: None
fastparquet : None
fsspec : 2023.9.2
gcsfs : None
matplotlib : 3.8.0
numba : 0.58.0
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : 12.0.1
pyreadstat : None
pyxlsb : None
s3fs : 2023.9.2
scipy : 1.11.3
sqlalchemy : 2.0.21
tables : None
tabulate : 0.9.0
xarray : None
xlrd : None
zstandard : None
tzdata : 2023.3
qtpy : None
pyqt5 : None
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