import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-7))
w1=cq.Workplane('YZ',origin=(16,0,0))
r=w0.sketch().segment((-16,-19),(-9,-19)).arc((-15,-6),(-9,8)).segment((-16,8)).close().assemble().finalize().extrude(-43).union(w1.sketch().segment((-14,33),(-8,33)).segment((-8,29)).segment((13,29)).segment((13,33)).segment((19,33)).segment((19,45)).segment((13,45)).segment((13,50)).segment((-8,50)).segment((-8,45)).segment((-14,45)).close().assemble().finalize().extrude(-14))