code: def setNumberOfLines(self, lines):
      self.mNumberOfLines = lines
      self.updateTimer()
  
imports: from math import ceil
  from PyQt5.QtCore import *
  from PyQt5.QtGui import *
  from PyQt5.QtWidgets import *
label_desc: Use image node_id 12 for calling the Spinner obj's underlying member method code with example usage: obj.setNumberOfLines(lines) without return types