Torstein Sørnes created ARROW-13007:
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Summary: Supporting Sets (HashSets)
Key: ARROW-13007
URL: https://issues.apache.org/jira/browse/ARROW-13007
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Affects Versions: 4.0.1
Reporter: Torstein Sørnes
Having support for Sets would be great.
It is possible to do:
```
pd.DataFrame([[\{'1': None}]], columns =["s"]).to_feather('/tmp/x')
```
But using a Set instead of a dictionary is not possible
```
pd.DataFrame([[\{'1'}]], columns =["s"]).to_feather('/tmp/x')
ArrowInvalid: ("Could not convert \{'1'} with type set: did not recognize
Python value type when inferring an Arrow data type", 'Conversion failed for
column s with type object')
```
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