import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,38,0))
r=w0.sketch().segment((-42,-31),(-34,-31)).segment((-34,-49)).segment((17,-49)).segment((18,-50)).segment((20,-49)).segment((29,-49)).segment((29,-43)).segment((38,-38)).segment((33,-31)).segment((42,-31)).segment((42,31)).segment((-6,31)).segment((-18,50)).segment((-38,38)).segment((-33,31)).segment((-42,31)).close().assemble().finalize().extrude(-77)