text: # Matplotlit: Create a simple plot example.
  # Refs: https://matplotlib.org/3.1.1/gallery/lines_bars_and_markers/simple_plot.html
  
  # Optional test with [Matplotlib Jupyter Integration](https://github.com/matplotlib/ipympl)
  # %matplotlib widget
  import matplotlib.pyplot as plt
  import numpy as np
  import os
  
  # Data for plotting
  t = np.arange(0.0, 2.0, 0.01)
  s = 1 + np.sin(2 * np.pi * t)
  
  fig, ax = plt.subplots()
  ax.plot(t, s)
  
  ax.set(
      xlabel="time (s)",
      ylabel="voltage (mV)",
      title="About as simple as it gets, folks",
  )
  ax.grid()
  # Note that the test can be run headless by checking if an image is produced
  file_path = os.path.join("/tmp", "test.png")
  fig.savefig(file_path)
  print(f"File {file_path} saved")
  