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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2020/09/08 13:17:00 UTC

[jira] [Created] (ARROW-9941) [Python] Better string representation for extension types

Antoine Pitrou created ARROW-9941:
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             Summary: [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


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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