[ARROW-1633] [Python] numpy "unicode" arrays not understood

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 0.8.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17644
• Assignee: Wes McKinney
• Reporter: Nick White
• Created: 02/Oct/17 17:17
• Updated: 11/Jan/23 07:15
• Resolved: 05/Oct/17 09:16

Description

import numpy as np
pa.StringArray.from_pandas(np.empty(1, np.unicode))

Throws:

---------------------------------------------------------------------------
ArrowNotImplementedError                  Traceback (most recent call last)
<ipython-input-68-f9bc946f2c0a> in <module>()
      1 import numpy as np
----> 2 pa.StringArray.from_pandas(np.empty(1, np.unicode))

array.pxi in pyarrow.lib.Array.from_pandas()

error.pxi in pyarrow.lib.check_status()

ArrowNotImplementedError: Unsupported numpy type 19

np.object arrays work, though...

Issue Links

• links to: GitHub Pull Request #1167