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10 changes: 6 additions & 4 deletions docarray/array/mixins/io/csv.py
Original file line number Diff line number Diff line change
Expand Up @@ -78,15 +78,17 @@ def save_csv(
writer.writeheader()

for d in self:
pd = d.to_dict(
doc_dict = d.to_dict(
protocol='jsonschema',
exclude=set(exclude_fields) if exclude_fields else None,
exclude_none=True,
)
if flatten_tags:
t = pd.pop('tags')
pd.update({f'tag__{k}': v for k, v in t.items()})
writer.writerow(pd)
t = doc_dict.pop('tags')
doc_dict.update({f'tag__{k}': v for k, v in t.items()})

doc_dict = {k: str(v).replace('\n', ' ') for k, v in doc_dict.items()}
writer.writerow(doc_dict)

@classmethod
def load_csv(
Expand Down