danepitkin commented on issue #37757:
URL: https://github.com/apache/arrow/issues/37757#issuecomment-1769149301
No problem! Here's a small PyArrow-only example that does not reproduce the
issue. I don't think it recreates the exact inputs that Awkward Array is using
though. Note that the empty array does fail, but I believe Awkward Array
handles this internally before calling PyArrow.
arrow_37757.py
```
import pyarrow as pa
import pyarrow.compute as pc
string_padded = [
[" αβγ ", " "],
[],
[" →δε← ", " ζz zζ ", " abc "],
]
expected = [
[["", "αβγ", "", ""], ["", "", ""]],
[],
[["", "→δε←", "", ""], ["", "ζz", "zζ", "", ""], ["", "abc", "", ""]],
]
for i, item in enumerate(string_padded):
arr = pa.array(item)
print(f"Testing: {arr}")
try:
assert pc.utf8_split_whitespace(item, max_splits=None).to_pylist()
== expected[i]
except Exception as err:
print(f"{err=}")
print("Test FAILED")
else:
print("Test PASSED")
print()
```
Output:
```
$ python arrow_37757.py
Testing: [
" αβγ ",
" "
]
Test PASSED
Testing: 0 nulls
err=ArrowNotImplementedError("Function 'utf8_split_whitespace' has no kernel
matching input types (null)")
Test FAILED
Testing: [
" →δε← ",
" ζz zζ ",
" abc "
]
Test PASSED
```
Version
```
$ python -c "import pyarrow as pa; print(pa.__version__);"
13.0.0
```
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