[Cython] User Question - Questions and 'Cannot convert to Python Object'...

[Stefan Behnel]

Robert Bradshaw wrote:
> On Mar 13, 2009, at 10:24 AM, Carl Witty wrote:
>> How about this?  In the hypothetical future version of Cython that
>> allows overriding __new__, say that the overrides have to be declared
>> in the .pxd file, with
>>
>>   cdef TYPE __new__(self, foo, bar)
>>
>> (where TYPE defaults to the class being declared, if omitted).  So
>> when generating code, if the class doesn't override __new__, you know
>> that calling the class returns an instance; if the class does override
>> __new__, then the return type is explicitly given.  This could be a
>> parent class, for my use case where I want to return an instance of a
>> sibling class; or it could be "object", if anybody ever has a use case
>> for having __new__ return an arbitrary object.
> 
> +1. This will make it possible to optimize the common case while  
> providing (future) flexibility.

+1 sounds like a good way to do it. Carl, can you write a comment for the
ticket so that it has your name in it? I'll change it into a feature request.

http://trac.cython.org/cython_trac/ticket/232

Stefan