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BUG: Display choices in error message of environment vars #7532

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Open
3 tasks done
emmanuel-ferdman opened this issue Apr 26, 2025 · 0 comments · May be fixed by #7533
Open
3 tasks done

BUG: Display choices in error message of environment vars #7532

emmanuel-ferdman opened this issue Apr 26, 2025 · 0 comments · May be fixed by #7533
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bug 🦗 Something isn't working Triage 🩹 Issues that need triage

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@emmanuel-ferdman
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Modin version checks

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

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

  • I have confirmed this bug exists on the main branch of Modin. (In order to do this you can follow this guide.)

Reproducible Example

from modin.config import Backend
Backend.set_active_backends(("Ray", "UnregisteredBackend"))

Issue Description

When setting active backends with at least one unregistered backend, Modin throws a ValueError but fails to properly format the error message due to a missing f-string prefix. This results in a raw string output with {new_choices} placeholder instead of showing actual backend names.

Expected Behavior

ValueError: Active backend choices ('Ray', 'UnregisteredBackend') are not all registered.

Error Logs

Installed Versions

INSTALLED VERSIONS
------------------
commit              : a671b5a8bf5dd13fb19f0e88edc679bc9e15c673
python              : 3.12.10.final.0
python-bits         : 64
OS                  : Linux
OS-release          : 5.14.21-150400.24.116-default
Version             : #1 SMP PREEMPT_DYNAMIC Fri Apr 12 12:56:11 UTC 2024 (900d642/lp)
machine             : x86_64
processor           : 
byteorder           : little
LC_ALL              : C.UTF-8
LANG                : C.UTF-8
LOCALE              : C.UTF-8

pandas              : 2.1.4
numpy               : 1.26.4
pytz                : 2025.2
dateutil            : 2.9.0.post0
setuptools          : 79.0.0
pip                 : 25.0.1
Cython              : None
pytest              : 8.3.5
hypothesis          : None
sphinx              : 8.2.3
blosc               : None
feather             : 0.4.1
xlsxwriter          : None
lxml.etree          : None
html5lib            : None
pymysql             : None
psycopg2            : 2.9.10
jinja2              : 3.1.6
IPython             : 9.1.0
pandas_datareader   : None
bs4                 : 4.13.4
bottleneck          : None
dataframe-api-compat: None
fastparquet         : None
fsspec              : 2025.3.2
gcsfs               : None
matplotlib          : 3.10.1
numba               : 0.61.2
numexpr             : None
odfpy               : None
openpyxl            : None
pandas_gbq          : None
pyarrow             : 16.1.0
pyreadstat          : None
pyxlsb              : None
s3fs                : None
scipy               : 1.15.2
sqlalchemy          : 2.0.40
tables              : None
tabulate            : 0.9.0
xarray              : 2025.3.1
xlrd                : None
zstandard           : 0.23.0
tzdata              : 2025.2
qtpy                : None
pyqt5               : None
@emmanuel-ferdman emmanuel-ferdman added bug 🦗 Something isn't working Triage 🩹 Issues that need triage labels Apr 26, 2025
emmanuel-ferdman added a commit to emmanuel-ferdman/modin that referenced this issue Apr 26, 2025
@emmanuel-ferdman
FIX-modin-project#7532: Display choices in error message of environme…
a71df76 
…nt vars

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>
@emmanuel-ferdman emmanuel-ferdman linked a pull request Apr 26, 2025 that will close this issue
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FIX-#7532: Display choices in error message of environment vars emmanuel-ferdman/modin
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