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https://issues.apache.org/jira/browse/ARROW-8685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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A. Coady resolved ARROW-8685.
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Resolution: Not A Bug
Thanks. Confirmed that this is Python 3.8 only, and numpy 1.15 doesn't
officially support 3.8. So nothing to fix.
> [Python] ImportError with NumPy<1.16.
> -------------------------------------
>
> Key: ARROW-8685
> URL: https://issues.apache.org/jira/browse/ARROW-8685
> Project: Apache Arrow
> Issue Type: Bug
> Components: Packaging, Python
> Affects Versions: 0.17.0
> Reporter: A. Coady
> Priority: Major
>
> {noformat}
> # pip install 'numpy<1.16' pyarrow...
> Successfully built numpy
> Installing collected packages: numpy, pyarrow
> Successfully installed numpy-1.15.4 pyarrow-0.17.0
> # python -c 'import pyarrow'ModuleNotFoundError: No module named
> 'numpy.core._multiarray_umath'Traceback (most recent call last):
> File "<string>", line 1, in <module>
> File "/usr/local/lib/python3.8/site-packages/pyarrow/__init__.py", line 59,
> in <module>
> from pyarrow.lib import cpu_count, set_cpu_count
> File "pyarrow/lib.pyx", line 37, in init pyarrow.lib
> ImportError: numpy.core.multiarray failed to import
> {noformat}
> Arrow's setup.py requires numpy>=1.14, but the actual requirement appears to
> be >=1.16.
> This is related to ARROW-7852; users will still see an ImportError if an
> older NumPy was already installed.
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