func_code: def overlap(x1=0, y1=0, r1=1, x2=0, y2=0, r2=1):
      x = (x2 - x1) * (x2 - x1)
      y = (y2 - y1) * (y2 - y1)
      xy = x + y
      D = math.sqrt(xy)
      if D >= r1 + r2:
          print(False)
      else:
          print(True)