[ARROW-6115] [Python] support LargeList, LargeString, LargeBinary in conversion to pandas

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22511
• Assignee: Joris Van den Bossche
• Reporter: Joris Van den Bossche
• Created: 02/Aug/19 07:59
• Updated: 11/Jan/23 07:45
• Resolved: 29/Sep/19 18:35

Description

General python support for those 3 new types has been added: ARROW-6000, ARROW-6084

However, one aspect that is not yet implemented is conversion to pandas (or numpy array):

In [67]: a = pa.array(['a', 'b', 'c'], pa.large_string()) 

In [68]: a.to_pandas() 
...
ArrowNotImplementedError: large_utf8

In [69]: pa.table({'a': a}).to_pandas()
...
ArrowNotImplementedError: No known equivalent Pandas block for Arrow data of type large_string is known.

Issue Links

• links to: GitHub Pull Request #5516