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https://issues.apache.org/jira/browse/ARROW-5540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney updated ARROW-5540:
--------------------------------
Priority: Major (was: Blocker)
> [Python] pa.lib.tzinfo_to_string(tz) throws ValueError: Unable to convert
> timezone `tzoffset(None, -14400)` to string
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: ARROW-5540
> URL: https://issues.apache.org/jira/browse/ARROW-5540
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Reporter: Michał Kujawski
> Priority: Major
>
> *Overview:*
> When trying to save DataFrame to parquet error is thrown while parsing a
> column with the following properties:
>
> {code:java}
> dtype: datetime64[ns, tzoffset(None, -14400)]
> dtype.tz: tzoffset(None, -14400)
> {code}
>
>
> *Error:*
> {code:java}
> ValueError: Unable to convert timezone `tzoffset(None, -14400)` to
> string{code}
>
> *Error stack:*
> {code:java}
> File "pyarrow/table.pxi", line 1139, in pyarrow.lib.Table.from_pandas
> File
> "/home/koojav/projects/toptal/teftel/.venv/lib/python3.6/site-packages/pyarrow/pandas_compat.py",
> line 480, in dataframe_to_arrays
> types)
> File
> "/home/koojav/projects/toptal/teftel/.venv/lib/python3.6/site-packages/pyarrow/pandas_compat.py",
> line 209, in construct_metadata
> field_name=sanitized_name)
> File
> "/home/koojav/projects/toptal/teftel/.venv/lib/python3.6/site-packages/pyarrow/pandas_compat.py",
> line 153, in get_column_metadata
> string_dtype, extra_metadata = get_extension_dtype_info(column)
> File
> "/home/koojav/projects/toptal/teftel/.venv/lib/python3.6/site-packages/pyarrow/pandas_compat.py",
> line 126, in get_extension_dtype_info
> metadata = {'timezone': pa.lib.tzinfo_to_string(dtype.tz)}
> File "pyarrow/types.pxi", line 1149, in pyarrow.lib.tzinfo_to_string
> ValueError: Unable to convert timezone `tzoffset(None, -14400)` to string
> {code}
> *Libraries:*
> * pandas 0.24.2
> * pyarrow 0.13.0
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