func_code: def overlap(x1=0, y1=0, r1=1, x2=0, y2=0, r2=1):
      distance = (abs((x2 - x1) ** 2) + abs((y2 - y1) ** 2)) ** 0.5
      if r1 + r2 > distance and abs(r1 - r2) <= distance:
          return True
      else:
          return False