[ARROW-1678] [Python] Incorrect serialization of numpy.float16

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.1
• Fix Version/s: 0.8.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17686
• Assignee: Licht Takeuchi
• Reporter: Licht Takeuchi
• Created: 16/Oct/17 10:33
• Updated: 11/Jan/23 07:16
• Resolved: 17/Oct/17 23:21

Description

The issue can be reproduced as follows.

import pyarrow as pa
import numpy as np

t = np.float16(-1.1)

print(type(t), t) # <class 'numpy.float16'> -1.0996
p = pa.serialize(t)

t_new = pa.deserialize(p.to_buffer())

print(type(t_new), t_new) #  <class 'int'> 0

Issue Links

• links to: GitHub Pull Request #1205