banana decodes integer values greater than 2147483647 and smaller than sys.maxint as long on all platforms

New submission from toidinamai <None>:

Hi,

I am working on a 64bit machine and use the Perspective Broker to wrap an API
that isn't really safe to call in my main python process.  This API does not
accept long objects and it throws an exception even when the long objects are
representable as ints, i.e. -sys.maxint-1 <= x <= sys.maxint.

Sometimes the integer values I send are greater than 2147483647 and on the
remote side they are decoded as longs.  This means that I cannot call the
wrapped API in those cases.  Unfortunately the values I send are themselves
contained in Python objects that mirror C structs and but it is nearly
impossible for me to walk the objects and downconvert the values myself.

I think when sending values through PB it should make sure they come out as the
same type they went in.  I tracked this down to banana and I can see that this
creates a problem because banana obviously wants to be platform independent.
Even though, I propose that banana should return values in the most appropriate
type on each platform, i.e. ints when they fit into python ints and longs
otherwise.  Just calling int wherever long is now called directly should fix
this an any version later than Python 2.2.

Regards,
Frank Benkstein.


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Type     : enhancement
Component: pb
Keywords : pb, spread, banana
Priority : normal
Nosy     : 
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http://twistedmatrix.com/trac/ticket/4169