[jira] [Assigned] (ARROW-3269) [Python] Fix warnings in unit test suite

["Krisztian Szucs (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-3269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Krisztian Szucs reassigned ARROW-3269:
--------------------------------------

    Assignee: Krisztian Szucs

> [Python] Fix warnings in unit test suite
> ----------------------------------------
>
>                 Key: ARROW-3269
>                 URL: https://issues.apache.org/jira/browse/ARROW-3269
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Wes McKinney
>            Assignee: Krisztian Szucs
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.11.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Observed in recent appveyor build https://ci.appveyor.com/project/pitrou/arrow/build/job/c6b3pslhqag1gnw7
> {code}
> ============================== warnings summary ===============================
> <unknown>:1396: DeprecationWarning: invalid escape sequence \(
> <unknown>:1401: DeprecationWarning: invalid escape sequence \(
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\formatting.py:32: FutureWarning: array_format is deprecated, use Array.format() instead
>   FutureWarning)
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\formatting.py:32: FutureWarning: array_format is deprecated, use Array.format() instead
>   FutureWarning)
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\formatting.py:32: FutureWarning: array_format is deprecated, use Array.format() instead
>   FutureWarning)
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> source:1396: DeprecationWarning: invalid escape sequence \(
> source:1401: DeprecationWarning: invalid escape sequence \(
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: FutureWarning: In the future, NAT != NAT will be True rather than False.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: elementwise != comparison failed; this will raise an error in the future.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\tests\test_convert_pandas.py:2076: RuntimeWarning: invalid value encountered in sqrt
>   _check_series(pd.Series([np.sqrt(-1)] * 3, dtype=object))
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\tests\test_ipc.py:298: FutureWarning: Please use read_next_batch instead of get_next_batch
>   reader.get_next_batch()
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: FutureWarning: In the future, NAT != NAT will be True rather than False.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: FutureWarning: In the future, NAT != NAT will be True rather than False.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pandas\core\dtypes\missing.py:431: DeprecationWarning: The truth value of an empty array is ambiguous. Returning False, but in future this will result in an error. Use `array.size > 0` to check that an array is not empty.
>   if left_value != right_value:
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\tests\test_parquet.py:1526: FutureWarning: Comparing Series of datetimes with 'datetime.date'.  Currently, the
> 'datetime.date' is coerced to a datetime. In the future pandas will
> not coerce, and 'the values will not compare equal to the
> 'datetime.date'. To retain the current behavior, convert the
> 'datetime.date' to a datetime with 'pd.Timestamp'.
>   predicate &= df[name] == value
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\tests\test_parquet.py:1974: ParserWarning: Falling back to the 'python' engine because the 'c' engine does not support regex separators (separators > 1 char and different from '\s+' are interpreted as regex); you can avoid this warning by specifying engine='python'.
>   io.BytesIO(expected_string), sep=r'\s{2,}', index_col=None, header=0
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\tests\test_parquet.py:1996: ParserWarning: Falling back to the 'python' engine because the 'c' engine does not support regex separators (separators > 1 char and different from '\s+' are interpreted as regex); you can avoid this warning by specifying engine='python'.
>   sep=r'\s{2,}', index_col=['cut', 'color', 'clarity'], header=0
> c:\miniconda36-x64\envs\wheel_test\lib\site-packages\pyarrow\tests\test_parquet.py:2019: ParserWarning: Falling back to the 'python' engine because the 'c' engine does not support regex separators (separators > 1 char and different from '\s+' are interpreted as regex); you can avoid this warning by specifying engine='python'.
>   sep=r'\s{2,}', index_col=['cut', 'color', 'clarity'], header=0
> -- Docs: https://docs.pytest.org/en/latest/warnings.html
> ====== 1003 passed, 93 skipped, 5 xfailed, 32 warnings in 19.77 seconds =======
> (wheel_test) C:\projects\arrow>set lastexitcode=0 
> {code}



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