val/103.py

import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,53))
r=w0.sketch().segment((-55,-1),(-35,-1)).segment((-35,-30)).segment((6,-30)).segment((6,-1)).segment((26,-1)).segment((26,8)).segment((6,8)).segment((6,37)).segment((-35,37)).segment((-35,8)).segment((-55,8)).close().assemble().finalize().extrude(-123).union(w0.sketch().push([(-69,49)]).circle(31).push([(66.5,-27)]).rect(67,106).push([(67,-26)]).circle(21,mode='s').finalize().extrude(17))