lidavidm commented on code in PR #12460:
URL: https://github.com/apache/arrow/pull/12460#discussion_r846079214
##########
docs/source/python/api/compute.rst:
##########
@@ -45,6 +45,21 @@ Aggregations
tdigest
variance
+Cumulative Functions
+--------------------
+
+Cumulative functions are vector functions that perform a running total on its
+input and outputs an array containing the corresponding intermediate running
values.
Review Comment:
I'm still a little confused about this, actually, and the example above
leaves me more confused. Here's what it currently does:
```python
>>> import pyarrow.compute as pc
>>> pc.cumulative_sum([1, 2, 3, 4])
<pyarrow.lib.Int64Array object at 0x7f586b71d100>
[
1,
3,
6,
10
]
```
Is this what's expected?
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