[ https://issues.apache.org/jira/browse/ARROW-2142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Antoine Pitrou reassigned ARROW-2142: ------------------------------------- Assignee: Antoine Pitrou > [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 > Assignee: Antoine Pitrou > Priority: Major > Labels: pull-request-available > > {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)