BUG: Groupby.sum, DataFrame.sum and Series.sum for object type should be NA instead of 0 for all-nan values#60458

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snitish wants to merge 5 commits intopandas-dev:mainfrom

snitish:groupby_sum_str_bug

Commits on Dec 1, 2024

BUG: Groupby sum for object type should be None instead of 0 for all nan values
snitish
committed

Commits on Dec 3, 2024

BUG: Add not to whatsnew/v3.0.0.rst
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Commits on Feb 15, 2025

Merge branch 'main' into groupby_sum_str_bug
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Commits on Feb 16, 2025

Groupby sum for all-nan object array should be nan instead of None
snitish
committed

Commits on Feb 18, 2025

Fix behavior for DataFrame.sum and Series.sum
snitish
committed