import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,2))
w1=cq.Workplane('ZX',origin=(0,-37,0))
r=w0.workplane(offset=-8/2).moveTo(-17,18.5).box(14,37,8).union(w0.sketch().segment((-22,-27),(-5,-37)).segment((20,0)).segment((17,2)).segment((9,-12)).segment((-6,-3)).close().assemble().finalize().extrude(40)).union(w1.sketch().segment((-42,10),(-14,10)).segment((-14,-3)).arc((-20,-48),(9,-12)).segment((18,-12)).segment((18,30)).segment((10,30)).segment((10,50)).segment((-42,50)).close().assemble().finalize().extrude(32))