code: def test_dependencies_not_imported():
      # Check that creating a figure without using numpy and pandas does not result in
      # the import of numpy and pandas, even if they are installed.
      assert "plotly" not in sys.modules
      assert "numpy" not in sys.modules
      assert "pandas" not in sys.modules
  
      import plotly.graph_objects as go
  
      fig = go.Figure().add_scatter(x=[0], y=[1])
      fig.to_json()
  
      assert "plotly" in sys.modules
      assert "numpy" not in sys.modules
      assert "pandas" not in sys.modules
  
      # check that numpy is installed
      import numpy as np
  
      fig = go.Figure().add_scatter(x=np.array([0]), y=np.array([1]))
      fig.to_json()
      assert "numpy" in sys.modules
      assert "pandas" not in sys.modules
  
      # check that pandas is installed
      import pandas as pd
  
      fig = go.Figure().add_scatter(x=pd.Series([0]), y=pd.Series([1]))
      fig.to_json()
      assert "pandas" in sys.modules
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_dependencies_not_imported() without return types