import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,19))
r=w0.sketch().segment((-50,14),(23,14)).segment((8,6)).segment((8,4)).segment((7,4)).segment((7,-24)).segment((25,-24)).segment((31,-36)).segment((49,-26)).segment((49,-24)).segment((50,-24)).segment((50,4)).segment((33,4)).segment((27,14)).segment((49,14)).segment((49,36)).segment((-50,36)).close().assemble().finalize().extrude(-38)