Joris Van den Bossche created ARROW-7031:
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Summary: [Python] Expose the offsets of a ListArray in python
Key: ARROW-7031
URL: https://issues.apache.org/jira/browse/ARROW-7031
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Reporter: Joris Van den Bossche
Assume the following ListArray:
{code}
In [1]: arr = pa.ListArray.from_arrays(offsets=[0, 3, 5], values=[1, 2, 3, 4,
5])
In [2]: arr
Out[2]:
<pyarrow.lib.ListArray object at 0x7f11de71c708>
[
[
1,
2,
3
],
[
4,
5
]
]
{code}
You can get the actual values as a flat array through {{.values}} /
{{.flatten()}}, but there is currently no easy way to get back to the offsets
(except from interpreting the buffers manually).
We should probably add an {{offsets}} attribute (there is actually also a TODO
comment for that).
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