[Patches] [ python-Patches-628208 ] xmlrpclib: Optional 'nil' support

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Patches item #628208, was opened at 2002-10-24 15:33
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Category: Library (Lib)
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: A.M. Kuchling (akuchling)
Assigned to: Fredrik Lundh (effbot)
Summary: xmlrpclib: Optional 'nil' support 

Initial Comment:
This patch doesn't include documentation or test suite 
updates yet, and only touches the <

The <nil/> extension is defined at 
http://ontosys.com/xml-rpc/extensions.html.

Outstanding questions:

* To generate <nil/>, an option must be explicitly 
supplied to dumps().  <nil/> is always accepted, 
and it can't be turned off.  Is this OK?  

* Similarly, allow_none is on or off for a ServerProxy; 
you can't turn it on for just one method.  (Seems a 
reasonable limitation...)

* Should the parameter to enable it  be named 
allow_none (Python term) or allow_nil (XML-RPC 
term)?

* When allow_none is false and a None is 
encountered, 
this patch raises a ValueError.  Is that the right 
exception, or should it use xmlrpclib.Error?  Can 
anyone suggest a better message for the exception?

* The FastMarshaller accelerator would also need to 
be updated.

* Are we ever likely to change the default for 
allow_none to True?  If so, how should we arrange 
things so we can warn people?


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