[ARROW-2714] [C++/Python] Variable step size slicing for arrays

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: C++, Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/19103
• Assignee: Wes McKinney
• Reporter: Florian Jetter
• Created: 15/Jun/18 13:39
• Updated: 11/Jan/23 07:22
• Resolved: 21/Apr/20 15:37

Description

Array slicing should support variable step sizes

The current behavior raises an IndexError, e.g.

In [8]: import pyarrow as pa
In [9]: pa.array([1, 2, 3])[::-1]
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
<ipython-input-9-20da5f9ab67a> in <module>()
----> 1 pa.array([1, 2, 3])[::-1]

array.pxi in pyarrow.lib.Array.__getitem__()

array.pxi in pyarrow.lib._normalize_slice()

IndexError: only slices with step 1 supported

Issue Links

• links to: GitHub Pull Request #6970