Florian Jetter created ARROW-2240:
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Summary: [Python] Array initialization with leading numpy nan
fails with exception
Key: ARROW-2240
URL: https://issues.apache.org/jira/browse/ARROW-2240
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 0.8.0
Reporter: Florian Jetter
Arrow initialization fails for string arrays with leading numpy NAN
{code:java}
import pyarrow as pa
import numpy as np
pa.array([np.nan, 'str'])
# Py3: ArrowException: Unknown error: must be real number, not str
# Py2: ArrowException: Unknown error: a float is required{code}
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