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https://issues.apache.org/jira/browse/THRIFT-395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12688347#action_12688347
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Jonathan Ellis commented on THRIFT-395:
---------------------------------------

In other words, my patch conforms to normal UTF-8-supporting behavior:

 1. pass a unicode object to a `string` field -> works
 2. pass a binary string containing ascii characters to a `string` field -> 
works
 3. pass binary data to a `binary` field -> works
 4. pass arbitrary binary data to a `string` field -> doesn't work

Pre-patch, the python api would allow case four, but this was a bug, because 
any server conforming to the thrift wire protocol (i.e. anything but another 
buggy python server) would try to decode from utf-8 and get garbage.  Switching 
from `string` to `binary` is the right fix for code in this situation.

> Python library + compiler does not support unicode strings
> ----------------------------------------------------------
>
>                 Key: THRIFT-395
>                 URL: https://issues.apache.org/jira/browse/THRIFT-395
>             Project: Thrift
>          Issue Type: Bug
>          Components: Compiler (Python)
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Blocker
>         Attachments: python-utf8.patch
>
>
> Effectively, all strings in the python bindings are treated as binary strings 
> -- no encoding/decoding to UTF-8 is done.  So if a unicode object is passed 
> to a (regular, non-binary) string, an exception is raised.

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