code: def test_constrained_layout3():
      """Test constrained_layout for colorbars with subplots"""
  
      fig, axs = plt.subplots(2, 2, layout="constrained")
      for nn, ax in enumerate(axs.flat):
          pcm = example_pcolor(ax, fontsize=24)
          if nn == 3:
              pad = 0.08
          else:
              pad = 0.02  # default
          fig.colorbar(pcm, ax=ax, pad=pad)
  
imports: import gc
  import numpy
  import pytest
  import matplotlib
  from matplotlib.testing.decorators import image_comparison
  import matplotlib.pyplot
  import matplotlib.transforms
  from matplotlib import gridspec, ticker
label_desc: Use image node_id 5 for calling a global function with example usage: test_constrained_layout3() without return types