Krisztian Szucs created ARROW-4258:
--------------------------------------

             Summary: [Python] Safe cast fails from numpy float64 array with 
nans to integer
                 Key: ARROW-4258
                 URL: https://issues.apache.org/jira/browse/ARROW-4258
             Project: Apache Arrow
          Issue Type: Bug
          Components: Python
            Reporter: Bryan Cutler
            Assignee: Krisztian Szucs


```

>>> pa.Array.from_pandas(pd.Series([1, None]), type=pa.int32(), safe=True)
 Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "pyarrow/array.pxi", line 474, in pyarrow.lib.Array.from_pandas
   File "pyarrow/array.pxi", line 169, in pyarrow.lib.array
   File "pyarrow/array.pxi", line 69, in pyarrow.lib._ndarray_to_array
   File "pyarrow/error.pxi", line 81, in pyarrow.lib.check_status
 pyarrow.lib.ArrowInvalid: Floating point value truncated

```



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