code: def test_hist_plot_odd_axes(image_array_3bands):
      """A histogram with 2 cols and 3 plots should have 4 axes total.
      this will ensure code coverage for clearing out those axes"""
  
      ncols = 2
      f, ax = ep.hist(image_array_3bands, cols=ncols)
  
      assert len(f.axes) == ncols * 2
      plt.close(f)
  
imports: import numpy
  import pytest
  import matplotlib.pyplot
  import earthpy.plot
label_desc: Use image node_id 14 for calling a global function with example usage: test_hist_plot_odd_axes(image_array_3bands) without return types