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CoW: Add property for references to series class #51732

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Merged
merged 1 commit into from
Mar 3, 2023
Merged

CoW: Add property for references to series class #51732

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5 changes: 1 addition & 4 deletions pandas/core/internals/construction.py
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Original file line number Diff line number Diff line change
Expand Up @@ -567,10 +567,7 @@ def _homogenize(
# Forces alignment. No need to copy data since we
# are putting it into an ndarray later
val = val.reindex(index, copy=False)
if isinstance(val._mgr, SingleBlockManager):
refs.append(val._mgr._block.refs)
else:
refs.append(None)
refs.append(val._references)
val = val._values
else:
if isinstance(val, dict):
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7 changes: 7 additions & 0 deletions pandas/core/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
properties,
reshape,
)
from pandas._libs.internals import BlockValuesRefs
from pandas._libs.lib import (
is_range_indexer,
no_default,
Expand Down Expand Up @@ -734,6 +735,12 @@ def _values(self):
"""
return self._mgr.internal_values()

@property
def _references(self) -> BlockValuesRefs | None:
if isinstance(self._mgr, SingleArrayManager):
return None
return self._mgr._block.refs

# error: Decorated property not supported
@Appender(base.IndexOpsMixin.array.__doc__) # type: ignore[misc]
@property
Expand Down