pandas (original) (raw)

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https://github.com/pandas-dev/pandas/blob/master/pandas/io/orc.py#L15-L54

Code Sample, a copy-pastable example

... import pandas as pd orc_data = pd.read_orc(orc_file_path)

Problem description

Pandas uses PyArrow package to load ORC/Parquet data.

For the orc data format, it will use pyarrow.orc.ORCFile to read data (orc.py), but the PyArrow does not declare orc in __init__.py file, so pandas will raise an AttributeError: module 'pyarrow' has no attribute 'orc'

This bug will occur if the Pandas version is greater than v1.2.0.dev0(after commit-6d1541e). Before that, pandas/io/orc.py will declare import pyarrow.orc before uses pyarrow to load orc data(v1.1.5/pandas/io.orc.py/).

Testing environment:

Ubuntu 18.04
python 3.7
pandas v1.2.1
pyarrow v3.0.0 (install via pip)(I haven't installed pyarrow via Conda for testing yet.)