pickle broken: can't handle NaN or Infinity under win32

Michael Hudson mwh at python.net
Tue Jul 5 15:59:12 CEST 2005

"Terry Reedy" <tjreedy at udel.edu> writes:

> "Grant Edwards" <grante at visi.com> wrote in message 
> news:11bja5bienakv68 at corp.supernews.com...
> > I'm working on it.  I should have said it's trivial if you have
> > access to the platforms to be supported.  I've tested a fix
> > that supports pickle streams generated under Win32 and glibc.
> > That's using the "native" string representation of a NaN or
> > Inf.
> >
> > A perhaps simpler approach would be to define a string
> > representation for Python to use for NaN and Inf.  Just because
> > something isn't defined by the C standard doesn't mean it can't
> > be defined by Python.
> I believe that changes have been made to marshal/unmarshal in 2.5 CVS with 
> respect to NAN/INF to eliminate annoying/surprising behavior differences 
> between corresponding .py and .pyc files.  Perhaps these revisions would be 
> relevant to pickle changes.

If you use a binary protocol for pickle, yes.


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  might well inhale people from off  their sofa until their heads
  get wedged in the card slots.              --- Jon Rabone, ucam.chat

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