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BUG: Improve error message when tansfrom() with incorrect axis #58494

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Merged
merged 11 commits into from
May 10, 2024
Merged

BUG: Improve error message when tansfrom() with incorrect axis #58494

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13cc277
DOC: Improve error msg for
luke396 Apr 30, 2024
17eec11
Merge remote-tracking branch 'upstream/main' into gh#58474
luke396 May 2, 2024
3c08734
Improve error msg
luke396 May 4, 2024
048e3e9
Merge remote-tracking branch 'upstream/main' into gh#58474
luke396 May 4, 2024
686ac92
Add test
luke396 May 4, 2024
9a9471d
Merge branch 'main' into gh#58474
May 5, 2024
177190c
Merge branch 'main' into gh#58474
May 7, 2024
674e6e0
Improve test name
luke396 May 7, 2024
7d5cc86
Improve error msg
luke396 May 10, 2024
8f2f838
Merge branch 'main' into gh#58474
May 10, 2024
1e85859
Improve msg in test
luke396 May 10, 2024
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6 changes: 5 additions & 1 deletion pandas/core/apply.py
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Original file line number Diff line number Diff line change
Expand Up @@ -628,7 +628,11 @@ def normalize_dictlike_arg(

cols = Index(list(func.keys())).difference(obj.columns, sort=True)
if len(cols) > 0:
raise KeyError(f"Column(s) {list(cols)} do not exist")
raise KeyError(
f"Column(s) {list(cols)} do not exist, "
"if you don't mean to apply to each rows, "
"consider using `axis=0` instead."
)

aggregator_types = (list, tuple, dict)

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