Michał Kujawski created ARROW-5540:
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Summary: 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
Reporter: Michał Kujawski
*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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