Hi, Looking for some help if possible. I was recently trying to get the equations of motion of a double pendulum via SymPy. When I used "kanes_equations" to obtain Fr and Fr* I got the above TypeError message.
I have the loads and the bodies contained in lists which are input into the kanes_equation method, which I think is causing the problem here? If I apply the method for a single pendulum with a single body (not contained in a list or array) kanes_equations works fine. I suspect it's a newer version of sympy or python which is causing the issue. If I try to perform the same method on the human standing tutorial I get the same error but for the bodies being RigidBody instead of Particle. I've run this tutorial and numerous other examples in the past without this error occurring. Is there a known workaround to this issue? Thanks, Nick -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/0a4cea0a-8050-4765-873f-7a0a0857b606n%40googlegroups.com.
