[ https://issues.apache.org/jira/browse/ARROW-666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15932598#comment-15932598 ]
Miki Tebeka commented on ARROW-666:
-----------------------------------
Seems like there's no implementation of {{DictionaryValue}} in {{schema.pyx}} (like there is {{BooleanValue}})
> [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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