code: def test_xkcd():
      np.random.seed(0)
  
      x = np.linspace(0, 2 * np.pi, 100)
      y = np.sin(x)
  
      with plt.xkcd():
          fig, ax = plt.subplots()
          ax.plot(x, y)
  
imports: import re
  import numpy
  from numpy.testing import assert_array_equal
  import pytest
  from matplotlib import patches
  from matplotlib.path import Path
  from matplotlib.patches import Polygon
  from matplotlib.testing.decorators import image_comparison
  import matplotlib.pyplot
  from matplotlib import transforms
  from matplotlib.backend_bases import MouseEvent
label_desc: Use image node_id 16 for calling a global function with example usage: test_xkcd() without return types