Re: [sage-devel] dumps doesn't save immutability for Matrix_mod2_dense
Done.
I hope this is helpful. Sage rocks and I really appreciate everyone's work!
Cheers,
Matthew
On Friday, May 31, 2013 5:59:56 AM UTC-4, Martin Albrecht wrote:
>
> Looks like a bug/oversight. Can you open a trac ticket?
>
> On Thursday 30 May 2013, Matthew Weippert wrote:
> > I think I found a bug in dumps for matrices over GF(2). The problem
> > surfaced when I tried to save a set of such matrices, and the load
> failed
> > complaining that
> >
> > TypeError('mutable matrices are unhashable',)
> >
> > Simple example demonstrates the problem:
> >
> > z = zero_matrix(GF(2), 3)
> > z.set_immutable()
> > print z.is_immutable()
> > zstr = z.dumps()
> > z2 = loads(zstr)
> > print z2.is_immutable()
> >
> >
> > which (i think) causes an exception in this code:
> > s = set()
> > s.add(z)
> > sstr = dumps(s)
> > s2 = loads(sstr)
> >
> > Cheers,
> > Matthew
>
> Cheers,
> Martin
>
> --
> name: Martin Albrecht
> _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x6532AFB4
> _otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF
> _www: http://martinralbrecht.wordpress.com/
> _jab: martinr...@jabber.ccc.de
>
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Re: [sage-devel] dumps doesn't save immutability for Matrix_mod2_dense
Looks like a bug/oversight. Can you open a trac ticket?
On Thursday 30 May 2013, Matthew Weippert wrote:
> I think I found a bug in dumps for matrices over GF(2). The problem
> surfaced when I tried to save a set of such matrices, and the load failed
> complaining that
>
> TypeError('mutable matrices are unhashable',)
>
> Simple example demonstrates the problem:
>
> z = zero_matrix(GF(2), 3)
> z.set_immutable()
> print z.is_immutable()
> zstr = z.dumps()
> z2 = loads(zstr)
> print z2.is_immutable()
>
>
> which (i think) causes an exception in this code:
> s = set()
> s.add(z)
> sstr = dumps(s)
> s2 = loads(sstr)
>
> Cheers,
> Matthew
Cheers,
Martin
--
name: Martin Albrecht
_pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x6532AFB4
_otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF
_www: http://martinralbrecht.wordpress.com/
_jab: martinralbre...@jabber.ccc.de
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[sage-devel] dumps doesn't save immutability for Matrix_mod2_dense
I think I found a bug in dumps for matrices over GF(2). The problem surfaced
when I tried to save a set of such matrices, and the load failed complaining
that
TypeError('mutable matrices are unhashable',)
Simple example demonstrates the problem:
z = zero_matrix(GF(2), 3)
z.set_immutable()
print z.is_immutable()
zstr = z.dumps()
z2 = loads(zstr)
print z2.is_immutable()
which (i think) causes an exception in this code:
s = set()
s.add(z)
sstr = dumps(s)
s2 = loads(sstr)
Cheers,
Matthew
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