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Modify add_column() to optionally accept a FeatureType as param #7143

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merged 2 commits into from
Sep 16, 2024
+12 −2
Merged

Modify add_column() to optionally accept a FeatureType as param #7143

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383a18e
Modify add_column() to optionally accept a FeatureType param
Sep 8, 2024
f1c9b59
Add feature param to add_column() docstring
Sep 11, 2024
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12 changes: 10 additions & 2 deletions src/datasets/arrow_dataset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5613,7 +5613,9 @@ def push_to_hub(

@transmit_format
@fingerprint_transform(inplace=False)
def add_column(self, name: str, column: Union[list, np.array], new_fingerprint: str):
def add_column(
self, name: str, column: Union[list, np.array], new_fingerprint: str, feature: Optional[FeatureType] = None
):
"""Add column to Dataset.

<Added version="1.7"/>
Expand All @@ -5640,7 +5642,13 @@ def add_column(self, name: str, column: Union[list, np.array], new_fingerprint:
})
```
"""
column_table = InMemoryTable.from_pydict({name: column})

if feature:
pyarrow_schema = Features({name: feature}).arrow_schema
else:
pyarrow_schema = None

column_table = InMemoryTable.from_pydict({name: column}, schema=pyarrow_schema)
_check_column_names(self._data.column_names + column_table.column_names)
dataset = self.flatten_indices() if self._indices is not None else self
# Concatenate tables horizontally
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