code: def setUp(self):
      super(FolderAPITestCase, self).setUp()
      py.sign_in("PythonTest", "xnyU0DEwvAQQCwHVseIL")
  
file_path: plotly.py/packages/python/chart-studio/chart_studio/tests/test_plot_ly/test_file/test_file.py
imports: import random
  import string
  from chart_studio import plotly
  from chart_studio.exceptions import PlotlyRequestError
  from chart_studio.tests.utils import PlotlyTestCase
label_desc: Use image node_id 1 for calling the FolderAPITestCase obj's underlying member method code with example usage: obj.setUp() without return types