how to surpress printing of simplex solver

[fboerman]

I would like to surpress all printing of the primal simplex solver for CyClpSimplex when calling primal().
I have tried to do so with python contextlib to redicrect stdout and stderr into /dev/null but it still keeps printing things like:
Clp0006I 0 Obj 0 Dual inf 0.018082951 (1) w.o. free dual inf (0)

is there a way to surpress this?