Marlene Mhangami created ARROW-10863:
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Summary: Arrow interval array cannot be changed to pandas interval
series
Key: ARROW-10863
URL: https://issues.apache.org/jira/browse/ARROW-10863
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 2.0.0
Reporter: Marlene Mhangami
Fix For: 2.0.0
Hi!
When I create a pandas interval series and then convert it into a pyarrow array
and then try to convert that pyarrow array back to pandas I'm getting an
attribute error. The error says that Series object has no attribute `to_pandas`.
I've added the code that produces the error below.
{code:java}
// code placeholder
In [14]: x = pd.Series([pd.Interval(0, 1), pd.Interval(2, 3), pd.Interval(3,
4)])
In [15]: y = pa.Array.from_pandas(x)
In [16]: y.type
Out[17]: ArrowIntervalType(extension<pandas.interval>)
In [17]: y.to_pandas()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-17-48c5b189df56> in <module>
----> 1
y.to_pandas()~/compose/etc/conda/cuda_10.2/envs/rapids/lib/python3.7/site-packages/pyarrow/array.pxi
in
pyarrow.lib._PandasConvertible.to_pandas()~/compose/etc/conda/cuda_10.2/envs/rapids/lib/python3.7/site-packages/pyarrow/array.pxi
in
pyarrow.lib.ExtensionArray._to_pandas()~/compose/etc/conda/cuda_10.2/envs/rapids/lib/python3.7/site-packages/pandas/core/generic.py
in __getattr__(self, name)
5128 if
self._info_axis._can_hold_identifiers_and_holds_name(name):
5129 return self[name]
-> 5130 return object.__getattribute__(self, name)
5131
5132 def __setattr__(self, name: str, value) -> None:AttributeError:
'Series' object has no attribute 'to_pandas'
{code}
It would be great tp have a method to convert from a pyarrow interval array
directly into a pandas series.
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