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From "Wes McKinney (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARROW-666) [Python] Error in DictionaryArray __repr__
Date Mon, 20 Mar 2017 14:16:42 GMT

    [ https://issues.apache.org/jira/browse/ARROW-666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15932699#comment-15932699
] 

Wes McKinney commented on ARROW-666:
------------------------------------

Can you submit a patch? Since you're already looking at it that should be faster

> [Python] Error in DictionaryArray __repr__
> ------------------------------------------
>
>                 Key: ARROW-666
>                 URL: https://issues.apache.org/jira/browse/ARROW-666
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Miki Tebeka
>
> d.py is
> {code}
> import pandas as pd
> import pyarrow as pa
> vals = pd.Series(['green', 'red', 'blue'] * 4)
> d = pd.Series(['red', 'green', 'blue'])
> print(d)
> ind = vals.apply(pd.Index(d).get_loc)
> print(vals)
> print(ind)
> v = pa.DictionaryArray.from_arrays(ind, d)
> print(v)
> {code}
> Running this results in the following error:
> {noformat}
> ╭─miki@xubi  python (git:ARROW-539) 
> ╰─<venv:python/venv>$ python d.py                             Mon Mar 20, 12:12
1 ↵
> 0      red
> 1    green
> 2     blue
> dtype: object
> 0     green
> 1       red
> 2      blue
> 3     green
> 4       red
> 5      blue
> 6     green
> 7       red
> 8      blue
> 9     green
> 10      red
> 11     blue
> dtype: object
> 0     1
> 1     0
> 2     2
> 3     1
> 4     0
> 5     2
> 6     1
> 7     0
> 8     2
> 9     1
> 10    0
> 11    2
> dtype: int64
> Traceback (most recent call last):
>   File "d.py", line 12, in <module>
>     print(v)
>   File "pyarrow/array.pyx", line 215, in pyarrow.array.Array.__repr__ (/home/miki/work/2sigma/arrow/python/build/temp.linux-x86_64-3.6/array.cxx:4132)
>     values = array_format(self, window=10)
>   File "/home/miki/work/2sigma/arrow/python/pyarrow/formatting.py", line 27, in array_format
>     for x in arr:
>   File "pyarrow/array.pyx", line 209, in __iter__ (/home/miki/work/2sigma/arrow/python/build/temp.linux-x86_64-3.6/array.cxx:3959)
>     yield self.getitem(i)
>   File "pyarrow/array.pyx", line 255, in pyarrow.array.Array.getitem (/home/miki/work/2sigma/arrow/python/build/temp.linux-x86_64-3.6/array.cxx:4825)
>     return scalar.box_scalar(self.type, self.sp_array, i)
>   File "pyarrow/scalar.pyx", line 246, in pyarrow.scalar.box_scalar (/home/miki/work/2sigma/arrow/python/build/temp.linux-x86_64-3.6/scalar.cxx:4522)
>     val = _scalar_classes[type.type.type]()
> KeyError: 25
> ╭─miki@xubi  python (git:ARROW-539) 
> ╰─<venv:python/venv>$  
> {noformat}



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