BUG: DataFrame.stack with future_stack=True failing when columns are tuples #54962
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phofl
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thx @rhshadrach |
meeseeksmachine
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…True failing when columns are tuples
phofl
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…stack=True failing when columns are tuples) (#54971) Backport PR #54962: BUG: DataFrame.stack with future_stack=True failing when columns are tuples Co-authored-by: Richard Shadrach <[email protected]>
mroeschke
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.In the previous implementation, we assumed that if
idxis a tuple that we were stacking multiple levels and hence did not need to wrap it in a tuple. However you can have columns consist of tuples that are not a MultiIndex, and then when stacking (the only level) you still want to wrap in a tuple.