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[Joris Van den Bossche](https://issues.apache.org/jira/browse/ARROW-5912?focusedCommentId=17193630) / @jorisvandenbossche: In the meantime, this now results in a tz-aware pyarrow array. It only takes the first encountered timezone. I think ideally in case of...
[Uwe Korn](https://issues.apache.org/jira/browse/ARROW-5885?focusedCommentId=16881284) / @xhochy: This will only work when you split the `pyarrow` package into multiple packages. The extras are not on a single wheel basis. At the current stage...
[Wes McKinney](https://issues.apache.org/jira/browse/ARROW-5885?focusedCommentId=16881311) / @wesm: It is a big project to do this. I think we will need to do it eventually, but it is not a priority for me anytime...
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16876025) / @pitrou: No, `convert_types` must be the full mapping of column names to data types. C++ doesn't know about `defaultdict`... We could add more inference options, though, for...
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16887162) / @pitrou: @wesm @nealrichardson do you have an idea about a desirable API here?
[Wes McKinney](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16887166) / @wesm: I think we need to create an abstract C++ type (or similar) that is a `ConversionRule`. We have other types of conversion rules where we have...
[Neal Richardson](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16887170) / @nealrichardson: I think I'm not understanding the problem. What's missing from the `column_types` we already support?
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16887172) / @pitrou: The request is for no inference to occur, without knowing the column names or the number of columns in advance (so you cannot pass an explicit...
[Neal Richardson](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16887183) / @nealrichardson: In principle, a user could parse the header row of the CSV separately to identify the column names, then use that to define `column_types` mapping each...
[Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-5811?focusedCommentId=16887187) / @pitrou: We're talking about C++ here. Dynamic typing isn't terribly idiomatic (though it's possible using std::variant) :-)