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https://issues.apache.org/jira/browse/ARROW-9941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17192202#comment-17192202
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Antoine Pitrou commented on ARROW-9941:
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cc [~jorisvandenbossche]
> [Python] Better string representation for extension types
> ---------------------------------------------------------
>
> Key: ARROW-9941
> URL: https://issues.apache.org/jira/browse/ARROW-9941
> Project: Apache Arrow
> Issue Type: Wish
> Components: C++, Python
> Reporter: Antoine Pitrou
> Priority: Major
> Fix For: 2.0.0
>
>
> When one defines an extension type in Python (by subclassing
> {{PyExtensionType}}) and uses that type e.g. in a Arrow table, the printed
> schema looks like this:
> {code}
> pyarrow.Table
> a: extension<arrow.py_extension_type>
> b: extension<arrow.py_extension_type>
> {code}
> ... which isn't very informative. PyExtensionType could perhaps override
> ToString() and call {{str}} on the type instance.
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