[ https://issues.apache.org/jira/browse/ARROW-11445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wes McKinney closed ARROW-11445. -------------------------------- > Type conversion failure on numpy 0.1.20 > --------------------------------------- > > Key: ARROW-11445 > URL: https://issues.apache.org/jira/browse/ARROW-11445 > Project: Apache Arrow > Issue Type: Bug > Components: Python > Affects Versions: 2.0.0 > Environment: Python 3.7.4 > Mac OS > Reporter: Carlo Mazzaferro > Assignee: Uwe Korn > Priority: Major > Fix For: 3.0.0 > > > While I have not dug deep enough in the Arrow codebase, it seems to me that > this is caused by the new numpy release: > [https://github.com/numpy/numpy/releases] > The issue below in fact is not observed when using numpy 0.19.* > > > > {code:java} > >>> pandas.__version__, pa.__version__, numpy.__version__ > ('1.2.1', '2.0.0', '1.20.0') > >>> df = pandas.DataFrame({'a': numpy.random.randn(10), 'b': > >>> numpy.random.randn(7).tolist() + [None, pandas.NA, numpy.nan], 'c': > >>> list(range(9)) + [numpy.nan]}) > >>> pa.Table.from_pandas(df) > Traceback (most recent call last): > File "<input>", line 1, in <module> > pa.Table.from_pandas(df) > File "pyarrow/table.pxi", line 1394, in pyarrow.lib.Table.from_pandas > File > "/Users/carlomazzafero/.virtualenvs/arr/lib/python3.7/site-packages/pyarrow/pandas_compat.py", > line 588, in dataframe_to_arrays > for c, f in zip(columns_to_convert, convert_fields)] > File > "/Users/carlomazzafero/.virtualenvs/arr/lib/python3.7/site-packages/pyarrow/pandas_compat.py", > line 588, in <listcomp> > for c, f in zip(columns_to_convert, convert_fields)] > File > "/Users/carlomazzafero/.virtualenvs/arr/lib/python3.7/site-packages/pyarrow/pandas_compat.py", > line 574, in convert_column > raise e > File > "/Users/carlomazzafero/.virtualenvs/arr/lib/python3.7/site-packages/pyarrow/pandas_compat.py", > line 568, in convert_column > result = pa.array(col, type=type_, from_pandas=True, safe=safe) > File "pyarrow/array.pxi", line 292, in pyarrow.lib.array > File "pyarrow/array.pxi", line 79, in pyarrow.lib._ndarray_to_array > File "pyarrow/array.pxi", line 67, in pyarrow.lib._ndarray_to_type > File "pyarrow/error.pxi", line 107, in pyarrow.lib.check_status > pyarrow.lib.ArrowTypeError: ('Did not pass numpy.dtype object', 'Conversion > failed for column a with type float64') > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)