code: def setUp(self):
      import plotly.io as pio
  
      pio.templates.default = None
  
file_path: plotly.py/packages/python/plotly/plotly/tests/test_core/test_update_objects/test_update_layout.py
imports: from unittest import TestCase
  import plotly.graph_objects
label_desc: Use image node_id 1 for calling the TestUpdateLayout obj's underlying member method code with example usage: obj.setUp() without return types