#19628: lazy_import breaks CachedRepresentation
----------------------------+-------------------------
Reporter: cheuberg | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.10
Component: coercion | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by nbruin):
OK, and these are the counts for lazy_import objects bound in scopes that
is not theirs:
{{{
from sage.misc.lazy_import import LazyImport,att #that's the helper
function
def misbound_lazies(S):
return [k for k,v in S.iteritems() if type(v) is LazyImport and
att(v)['_namespace'] is not S]
M=[(k,len(misbound_lazies(m.__dict__))) for k,m in sys.modules.iteritems()
if m is not None]
}}}
{{{
sage: [m for m in M if m[1] > 0]
[('sage.combinat.tableau_tuple', 1),
('sage.libs.linbox.linbox', 1),
('sage.groups.libgap_mixin', 1),
('__main__', 190),
('sage.categories.all', 1),
('sage.combinat.all', 34),
('sage.calculus.all', 1),
('sage.geometry.all', 3),
('sage.functions.piecewise', 1),
('sage.structure.sage_object', 1),
('sage.combinat.partition_tuple', 1),
('sage.modular.arithgroup.congroup_generic', 1),
('sage.schemes.all', 6),
('sage.rings.all', 3),
('sage.functions.special', 1),
('sage.functions.airy', 1),
('sage.all_cmdline', 190),
('sage.libs.pari.gen_py', 4),
('sage.structure.coerce', 1),
('sage.functions.bessel', 1),
('sage.functions.orthogonal_polys', 1),
('sage.numerical.interactive_simplex_method', 1),
('sage.combinat.integer_vectors_mod_permgroup', 1),
('sage.groups.all', 10),
('sage.combinat.crystals.tensor_product', 1),
('sage.combinat.composition', 1),
('sage.categories.groups', 1),
('sage.combinat.partition', 1),
('sage.all', 165)]
sage: len(set(flatten([misbound_lazies(m.__dict__) for m in
sys.modules.values() if m is not None])))
195
}}}
So, assuming that symbol name is a good indication, there seem to be about
195 distinct lazy_import objects around that are bound in wrong scopes.
Most frequently occurring:
{{{
sage: L=[misbound_lazies(m.__dict__) for m in sys.modules.values() if m is
not None]
sage: sorted(Counter(flatten(L)).items(),key=lambda a:a[1])[-20:]
[('WehlerK3Surface', 4),
('ClusterQuiver', 4),
('CrystalOfNakajimaMonomials', 4),
('KostkaFoulkesPolynomial', 4),
('polytopes', 4),
('ExtendedAffineWeylGroup', 4),
('QuaternionMatrixGroupGF3', 4),
('KirillovReshetikhinTableaux', 4),
('CrystalOfGeneralizedYoungWalls', 4),
('maxima_calculus', 4),
('AffineCrystalFromClassical', 4),
('ClusterSeed', 4),
('QuiverMutationType', 4),
('maxima', 4),
('NonNegativeIntegerSemiring', 5),
('Polyhedron', 5),
('MatrixGroup', 5),
('AsymptoticRing', 5),
('cartesian_product', 7),
('NN', 9)]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19628#comment:22>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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