Opened 4 years ago

Closed 2 months ago

#24477 closed defect (duplicate)

solve(x, [x], solution_dict=True) error

Reported by: rws Owned by:
Priority: major Milestone: sage-duplicate/invalid/wontfix
Component: calculus Keywords:
Cc: charpent Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Status badges

Description (last modified by rws)

From https://groups.google.com/forum/#!topic/sage-devel/EL-kPIR1VFM:

solve(x, [x], solution_dict=True)
...
/home/ralf/sage/local/lib/python2.7/site-packages/sage/symbolic/relation.pyc in solve(f, *args, **kwds)
   1045 
   1046     if is_Expression(f): # f is a single expression
-> 1047         return _solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
   1048 
   1049     if not isinstance(f, (list, tuple)):

/home/ralf/sage/local/lib/python2.7/site-packages/sage/symbolic/relation.pyc in _solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
   1369     if solution_dict:
   1370         if isinstance(x, (list, tuple)):
-> 1371             X = [{sol.left():sol.right() for sol in b} for b in X]
   1372         else:
   1373             X = [dict([[sol.left(),sol.right()]]) for sol in X]

TypeError: 'sage.symbolic.expression.Expression' object is not iterable

Change History (8)

comment:1 Changed 4 years ago by rws

  • Description modified (diff)

comment:2 Changed 4 years ago by charpent

  • Cc charpent added

comment:3 follow-up: Changed 2 months ago by chapoton

  • Milestone changed from sage-8.2 to sage-duplicate/invalid/wontfix
  • Status changed from new to needs_review

fixed by #31452, so duplicate, please confirm

comment:4 in reply to: ↑ 3 ; follow-up: Changed 2 months ago by charpent

  • Milestone changed from sage-duplicate/invalid/wontfix to sage-9.4
  • Status changed from needs_review to needs_work

Replying to chapoton:

fixed by #31452, so duplicate, please confirm

Nope. On 9.3 :

sage: solve(x, [x], solution_dict=True)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-5-6f16dd325c63> in <module>
----> 1 solve(x, [x], solution_dict=True)

/usr/local/sage-9/local/lib/python3.9/site-packages/sage/symbolic/relation.py in solve(f, *args, **kwds)
   1041 
   1042     if is_Expression(f): # f is a single expression
-> 1043         return _solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
   1044 
   1045     if not isinstance(f, (list, tuple)):

/usr/local/sage-9/local/lib/python3.9/site-packages/sage/symbolic/relation.py in _solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
   1366     if solution_dict:
   1367         if isinstance(x, (list, tuple)):
-> 1368             X = [{sol.left():sol.right() for sol in b} for b in X]
   1369         else:
   1370             X = [dict([[sol.left(),sol.right()]]) for sol in X]

/usr/local/sage-9/local/lib/python3.9/site-packages/sage/symbolic/relation.py in <listcomp>(.0)
   1366     if solution_dict:
   1367         if isinstance(x, (list, tuple)):
-> 1368             X = [{sol.left():sol.right() for sol in b} for b in X]
   1369         else:
   1370             X = [dict([[sol.left(),sol.right()]]) for sol in X]

TypeError: 'sage.symbolic.expression.Expression' object is not iterable

==> needs_work, and relevant milestone.

comment:5 in reply to: ↑ 4 Changed 2 months ago by charpent

  • Milestone changed from sage-9.4 to sage-duplicate/invalid/wontfix
  • Status changed from needs_work to needs_review

Wups : #31452 in NOT in 9.3 (I should wear my spectacles when reading trac...).

I'll test this. Restoring status...

Apologies.

Replying to charpent:

Replying to chapoton:

fixed by #31452, so duplicate, please confirm

Nope. On 9.3 :

sage: solve(x, [x], solution_dict=True)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-5-6f16dd325c63> in <module>
----> 1 solve(x, [x], solution_dict=True)

/usr/local/sage-9/local/lib/python3.9/site-packages/sage/symbolic/relation.py in solve(f, *args, **kwds)
   1041 
   1042     if is_Expression(f): # f is a single expression
-> 1043         return _solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
   1044 
   1045     if not isinstance(f, (list, tuple)):

/usr/local/sage-9/local/lib/python3.9/site-packages/sage/symbolic/relation.py in _solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
   1366     if solution_dict:
   1367         if isinstance(x, (list, tuple)):
-> 1368             X = [{sol.left():sol.right() for sol in b} for b in X]
   1369         else:
   1370             X = [dict([[sol.left(),sol.right()]]) for sol in X]

/usr/local/sage-9/local/lib/python3.9/site-packages/sage/symbolic/relation.py in <listcomp>(.0)
   1366     if solution_dict:
   1367         if isinstance(x, (list, tuple)):
-> 1368             X = [{sol.left():sol.right() for sol in b} for b in X]
   1369         else:
   1370             X = [dict([[sol.left(),sol.right()]]) for sol in X]

TypeError: 'sage.symbolic.expression.Expression' object is not iterable

==> needs_work, and relevant milestone.

comment:6 Changed 2 months ago by charpent

  • Milestone changed from sage-duplicate/invalid/wontfix to sage-9.4
  • Status changed from needs_review to positive_review

Rebased on 9.3, {{{ptestlong}} of your branch gimes me exactly the same failures (two gap-related permanent failures and one transient pari-gp timeout) as 9.3.

==> positive_review (for good, this time (I hope...)).

comment:7 Changed 2 months ago by charpent

  • Milestone changed from sage-9.4 to sage-duplicate/invalid/wontfix

I'm stupid : I positioned positive_review on a duplicate ticket. Fixed. Time for a walk...

comment:8 Changed 2 months ago by chapoton

  • Resolution set to duplicate
  • Status changed from positive_review to closed
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