Zhuo Peng created ARROW-7362: -------------------------------- Summary: [Python] ListArray.flatten() should take care of slicing offsets Key: ARROW-7362 URL: https://issues.apache.org/jira/browse/ARROW-7362 Project: Apache Arrow Issue Type: Bug Reporter: Zhuo Peng Assignee: Zhuo Peng
Currently ListArray.flatten() simply returns the child array. If a ListArray is a slice of another ListArray, they will share the same child array, however the expected behavior (I think) of flatten() should be returning an Array that's a concatenation of all the sub-lists in the ListArray, so the slicing offset should be taken into account. For example: a = pa.array([[1], [2], [3]]) assert a.flatten().equals(pa.array([1,2,3])) # expected: a.slice(1).flatten().equals(pa.array([2, 3])) -- This message was sent by Atlassian Jira (v8.3.4#803005)