Antoine Pitrou created ARROW-2278:
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Summary: [Python] deserializing Numpy struct arrays raises
Key: ARROW-2278
URL: https://issues.apache.org/jira/browse/ARROW-2278
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 0.8.0
Reporter: Antoine Pitrou
{code:python}
>>> import numpy as np
>>> dt = np.dtype([('x', np.int8), ('y', np.float32)])
>>> arr = np.arange(5*10, dtype=np.int8).view(dt)
>>> pa.deserialize(pa.serialize(arr).to_buffer())
Traceback (most recent call last):
File "<ipython-input-13-6810c780d033>", line 1, in <module>
pa.deserialize(pa.serialize(arr).to_buffer())
File "serialization.pxi", line 441, in pyarrow.lib.deserialize
File "serialization.pxi", line 404, in pyarrow.lib.deserialize_from
File "serialization.pxi", line 257, in
pyarrow.lib.SerializedPyObject.deserialize
File "serialization.pxi", line 174, in
pyarrow.lib.SerializationContext._deserialize_callback
File "/home/antoine/arrow/python/pyarrow/serialization.py", line 44, in
_deserialize_numpy_array_list
return np.array(data[0], dtype=np.dtype(data[1]))
TypeError: a bytes-like object is required, not 'int'
{code}
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