If solve is called with list containing a single variable and solution_dict=True, the code tries to iterate over the solution, but can't because it is not an Expression rather than a list of expressions. As an example,
solve(x, [x], solution_dict=True) The problem occurs at the end of _solve_expression (at line 1260 of src/sage/symbolic/relation.py): if solution_dict: if isinstance(x, (list, tuple)): X = [{sol.left():sol.right() for sol in b} for b in X] else: X = [dict([[sol.left(),sol.right()]]) for sol in X] (x is what solve is requested to solve for and X is the set of solutions). But if only a single variable is passed, each b in X is an Expression such as x == 0, hence the for sol in b fails. Jacob -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.