BUG: stack with empty level list #60826
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mroeschke
reviewed
Feb 3, 2025
pandas/core/reshape/reshape.py
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| @@ -930,6 +930,8 @@ def stack_v3(frame: DataFrame, level: list[int]) -> Series | DataFrame: | |||
| if frame.columns.nunique() != len(frame.columns): | |||
| raise ValueError("Columns with duplicate values are not supported in stack") | |||
| set_levels = set(level) | |||
| if not len(set_levels): | |||
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Nit: Could you just check if not level: before the set call?
mroeschke
reviewed
Feb 3, 2025
mroeschke
approved these changes
Feb 4, 2025
|
Thanks @quangngd |
ShashwatAgrawal20
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to ShashwatAgrawal20/pandas
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Feb 4, 2025
* return early if set_levels is empty * add test * add whatsnew * check empty before make set
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.Please instruct of which
whatsnewto add. As of the time of writing there are 2.3.0 and 3.0.0