code: def test_xkcd_marker():
      np.random.seed(0)
  
      x = np.linspace(0, 5, 8)
      y1 = x
      y2 = 5 - x
      y3 = 2.5 * np.ones(8)
  
      with plt.xkcd():
          fig, ax = plt.subplots()
          ax.plot(x, y1, "+", ms=10)
          ax.plot(x, y2, "o", ms=10)
          ax.plot(x, y3, "^", ms=10)
  
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 17 for calling a global function with example usage: test_xkcd_marker() without return types