Joris Van den Bossche created ARROW-5859: --------------------------------------------
Summary: [Python] Support ExtentionType on conversion to numpy/pandas Key: ARROW-5859 URL: https://issues.apache.org/jira/browse/ARROW-5859 Project: Apache Arrow Issue Type: Improvement Components: Python Reporter: Joris Van den Bossche Currently converting a Table of RecordBatch with an ExtensionType array to pandas gives: {{code}} ArrowNotImplementedError: No known equivalent Pandas block for Arrow data of type extension<arrow.py_extension_type> is known. {{code}} And similarly converting the array itself to a python object (to_pandas or to_pylist) gives an ArrowNotImplementedError or a "KeyError: 28" Initial support could be to fall back to the storage type. -- This message was sent by Atlassian JIRA (v7.6.3#76005)