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Reorder tests in maybe_downcast_numeric #55825

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merged 7 commits into from
Nov 22, 2023
Merged

Reorder tests in maybe_downcast_numeric #55825

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80b5bc6
Reorder tests in maybe_downcast_numeric
MichaelTiemannOSC Nov 4, 2023
51ee73c
Merge branch 'main' into Issue_55824
MichaelTiemannOSC Nov 7, 2023
4594c5c
Simplify/optimize tests for downcasting
MichaelTiemannOSC Nov 7, 2023
dc9851d
Merge branch 'main' into Issue_55824
MichaelTiemannOSC Nov 7, 2023
8c6bfe1
Update cast.py
MichaelTiemannOSC Nov 7, 2023
450315e
Eliminate need to call `ravel`
MichaelTiemannOSC Nov 9, 2023
2815572
Merge branch 'main' into Issue_55824
rhshadrach Nov 22, 2023
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14 changes: 5 additions & 9 deletions pandas/core/dtypes/cast.py
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Original file line number Diff line number Diff line change
Expand Up @@ -361,15 +361,11 @@ def trans(x):
# if we don't have any elements, just astype it
return trans(result).astype(dtype)

# do a test on the first element, if it fails then we are done
r = result.ravel()
arr = np.array([r[0]])

if isna(arr).any():
# if we have any nulls, then we are done
return result

elif not isinstance(r[0], (np.integer, np.floating, int, float, bool)):
if isinstance(result, np.ndarray):
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element = result.item(0)
else:
element = result.iloc[0]
if not isinstance(element, (np.integer, np.floating, int, float, bool)):
# a comparable, e.g. a Decimal may slip in here
return result

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