Using Casadi from Julia

[A-C1]

I am using Casadi from Julia and have the following code:

using PyCall
cd = pyimport("casadi")
opti = cd.Opti()
x = opti.variable()

This results in ValueError('call stack is not deep enough').

However, the following workaround works:

using PyCall
cd = pyimport("casadi")
opti = cd.Opti()
x = py"$(opti).variable()"

Also the code works fine when run directly in Python. What is the reason for this?

[mkitti]

It looks like the problem originates with Casadi trying to interrogate the call stack and failing. It's probably expecting to find a frame where the Python call was initiated, but that doesn't exist because you made the call from Julia. Perhaps file a ticket with Casadi and link here?

[metab0t]

The same problem as https://github.com/JuliaPy/PyCall.jl/issues/71.

The problem is caused by code at https://github.com/casadi/casadi/blob/12fa60f676716ae09aa2abe34c1c9b9cf426e68a/swig/casadi.i#L4403