code: def peak_memory_usage():
      
      if sys.platform.startswith('win'):
          p = psutil.Process()
          return p.memory_info().peak_wset / 1024 / 1024
  
      mem = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
      factor_mb = 1 / 1024
      if sys.platform == 'darwin':
          factor_mb = 1 / (1024 * 1024)
      return mem * factor_mb
docs: Return peak memory usage in MB