Dimitri Vorona commented on ARROW-2816:

I sent a PR with proposed changes.

> [Python] Add __iter__ method to NativeFile
> ------------------------------------------
>                 Key: ARROW-2816
>                 URL: https://issues.apache.org/jira/browse/ARROW-2816
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Wes McKinney
>            Assignee: Dimitri Vorona
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.10.0
>          Time Spent: 10m
>  Remaining Estimate: 0h
> Copied from https://github.com/apache/arrow/issues/2114
> {code}
> Currently, NativeFile does not pass the check of pandas for being a 
> "file-like" object because it does not have __iter__ method. It can be easily 
> added using code from native python io module as a reference. Another way 
> would be to subclass io.IOBase.
> The exact code of pandas check can be found here.
> Code for __iter__ method and io.IOBase can be found here.
> {code}

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