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https://issues.apache.org/jira/browse/ARROW-2432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Bryan Cutler updated ARROW-2432:
--------------------------------
    Summary: [Python] from_pandas fails when converting decimals if have None 
values  (was: [Python] from_pandas fails when converting decimals if contain 
None)

> [Python] from_pandas fails when converting decimals if have None values
> -----------------------------------------------------------------------
>
>                 Key: ARROW-2432
>                 URL: https://issues.apache.org/jira/browse/ARROW-2432
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 0.9.0
>            Reporter: Bryan Cutler
>            Assignee: Bryan Cutler
>            Priority: Major
>
> Using from_pandas to convert decimals fails if encounters a value of 
> {{None}}. For example:
> {code:java}
> In [1]: import pyarrow as pa
> ...: import pandas as pd
> ...: from decimal import Decimal
> ...:
> In [2]: s_dec = pd.Series([Decimal('3.14'), None])
> In [3]: pa.Array.from_pandas(s_dec, type=pa.decimal128(3, 2))
> ---------------------------------------------------------------------------
> ArrowInvalid Traceback (most recent call last)
> <ipython-input-3-2da56007a0da> in <module>()
> ----> 1 pa.Array.from_pandas(s_dec, type=pa.decimal128(3, 2))
> array.pxi in pyarrow.lib.Array.from_pandas()
> array.pxi in pyarrow.lib.array()
> error.pxi in pyarrow.lib.check_status()
> error.pxi in pyarrow.lib.check_status()
> ArrowInvalid: Error converting from Python objects to Decimal: Got Python 
> object of type NoneType but can only handle these types: decimal.Decimal
> In [4]: s_dec
> Out[4]:
> 0 3.14
> 1 None
> dtype: object{code}
> The above error is raised when specifying decimal type.  When no type is 
> specified, a seg fault happens.
> This previously worked in 0.8.0.



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