Hi, On Mon, Jul 25, 2011 at 8:49 PM, Aaron Meurer <[email protected]> wrote: > I think the proper fix is to either make DeferredVector an Expr object > or give it a _sympy_ method so that sympify() knows how to convert it > without resorting to trying to iterate over it. > > Actually, I see now that DeferredVector is a generator of Symbol > objects. So expr.subs(x, newt) makes about as much sense as > expr.subs(x, cos) (that's not a typo).
Yes, you're right, the DeferredVector doesn't make sense there. Luckily, in our production code, we'd removed it some time ago, so the behavior of 0.7.1 won't be a significant direct problem for us (nipy.org). Do you think it is worth trying to make the subs give a more specific error though? Best, Matthew -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
