[ARROW-9576] [Python][Doc] Fix error in code example for extension types

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 2.0.0
• Component/s: Documentation
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17290
• Assignee: Bryan Cutler
• Reporter: Bryan Cutler
• Created: 27/Jul/20 23:09
• Updated: 11/Jan/23 08:07
• Resolved: 28/Jul/20 00:33

Description

There is an error in the example code using an undefined variable `arr` instead of `self` here https://arrow.apache.org/docs/python/extending_types.html#conversion-to-pandas

Issue Links

• links to: GitHub Pull Request #7845