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BUG: set value with iloc and list like indexer #37041

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BUG: set value with iloc and list like indexer #37041

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803caae
test get value from array
erfannariman Oct 10, 2020
00e4fb2
check if len is 1
erfannariman Oct 10, 2020
8350694
revert blocks
erfannariman Oct 12, 2020
6fd847f
check for categorical
erfannariman Oct 12, 2020
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3 changes: 3 additions & 0 deletions pandas/core/indexing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1785,6 +1785,9 @@ def _setitem_single_column(self, loc: int, value, plane_indexer):
else:
# set the item, possibly having a dtype change
ser = ser.copy()
if is_list_like(value):
if len(value) == 1:
value = value[0]
ser._mgr = ser._mgr.setitem(indexer=pi, value=value)
ser._maybe_update_cacher(clear=True)

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2 changes: 1 addition & 1 deletion pandas/core/internals/blocks.py
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Expand Up @@ -932,7 +932,7 @@ def setitem(self, indexer, value):
# value must be storable at this moment
if is_extension_array_dtype(getattr(value, "dtype", None)):
# We need to be careful not to allow through strings that
# can be parsed to EADtypes
# can be parsed to EADtypes
is_ea_value = True
arr_value = value
else:
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