code: def test_contour_Nlevels():
      # A scalar levels arg or kwarg should trigger auto level generation.
      # https://github.com/matplotlib/matplotlib/issues/11913
      z = np.arange(12).reshape((3, 4))
      fig, ax = plt.subplots()
      cs1 = ax.contour(z, 5)
      assert len(cs1.levels) > 1
      cs2 = ax.contour(z, levels=5)
      assert (cs1.levels == cs2.levels).all()
  
imports: import datetime
  import platform
  import re
  from unittest import mock
  import contourpy
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_almost_equal_nulp, assert_array_equal
  import matplotlib
  from matplotlib import pyplot, rc_context, ticker
  from matplotlib.colors import LogNorm, same_color
  import matplotlib.patches
  from matplotlib.testing.decorators import check_figures_equal, image_comparison
  import pytest
label_desc: Use image node_id 6 for calling a global function with example usage: test_contour_Nlevels() without return types