Antoine Pitrou created ARROW-2142: ------------------------------------- Summary: [Python] Conversion from Numpy struct array unimplemented Key: ARROW-2142 URL: https://issues.apache.org/jira/browse/ARROW-2142 Project: Apache Arrow Issue Type: Improvement Components: Python Affects Versions: 0.8.0 Reporter: Antoine Pitrou
{code:python} >>> arr = np.array([(1.5,)], dtype=np.dtype([('x', np.float32)])) >>> arr array([(1.5,)], dtype=[('x', '<f4')]) >>> arr[0] (1.5,) >>> arr['x'] array([1.5], dtype=float32) >>> arr['x'][0] 1.5 >>> pa.array(arr, type=pa.struct([pa.field('x', pa.float32())])) Traceback (most recent call last): File "<ipython-input-18-27a52820b7d8>", line 1, in <module> pa.array(arr, type=pa.struct([pa.field('x', pa.float32())])) File "array.pxi", line 177, in pyarrow.lib.array File "error.pxi", line 77, in pyarrow.lib.check_status File "error.pxi", line 85, in pyarrow.lib.check_status ArrowNotImplementedError: /home/antoine/arrow/cpp/src/arrow/python/numpy_to_arrow.cc:1585 code: converter.Convert() NumPyConverter doesn't implement <struct<x: float>> conversion. {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)