code: def test_select_by_secondary_y(self):
      self.assert_select_traces([2, 3, 9], row=2, col=1)
      self.assert_select_traces([2, 3], row=2, col=1, secondary_y=False)
      self.assert_select_traces([9], row=2, col=1, secondary_y=True)
  
imports: from unittest import TestCase
  import inspect
  import copy
  import pytest
  import plotly.graph_objs
  from plotly.subplots import make_subplots
  from functools import reduce
label_desc: Use image node_id 5 for calling the TestSelectForEachUpdateTraces obj's underlying member method code with example usage: obj.test_select_by_secondary_y() without return types