Patrick Hunt commented on ZOOKEEPER-510:

sounds good. I didn't mean/intend that python had to mirror java exactly, just 
that the closer it is the easier for ppl to transition. Obv we
should "pythonize" so that we fit std idioms, etc....

(glad to have you back! :-) )

> zkpython lumps all exceptions as IOError, needs specialized exceptions for 
> KeeperException types
> ------------------------------------------------------------------------------------------------
>                 Key: ZOOKEEPER-510
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-510
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: contrib-bindings
>    Affects Versions: 3.2.0
>            Reporter: Patrick Hunt
>            Assignee: Henry Robinson
>             Fix For: 3.3.0
> The current zkpython bindings always throw "IOError("text")" exceptions, even 
> for ZK specific exceptions such as NODEEXISTS. This makes it difficult (error 
> prone) to handle exceptions in python code. You can't easily pickup a 
> connection loss vs a node exists for example. Of course you could match the 
> error string, but this seems like a bad idea imo.
> We need to add specific exception types to the python binding that map 
> directly to KeeperException/java types. It would also be useful to include 
> the information provided by the KeeperException (like path in some cases), 
> etc... as part of the error thrown to the python code. Would probably be a 
> good idea to stay as close to java api as possible wrt mapping the errors.

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