old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """
  Showcases *CIECAM02* colour appearance model computations.
  """
  
  import colour
  from colour.utilities.verbose import message_box
  
  message_box('"CIECAM02" Colour Appearance Model Computations')
  
  XYZ = (19.01, 20.00, 21.78)
  XYZ_w = (95.05, 100.00, 108.88)
  L_A = 318.31
  Y_b = 20.0
  surround = colour.CIECAM02_VIEWING_CONDITIONS['Average']
  message_box(('Converting to "CIECAM02" colour appearance model specification '
               'using given parameters:\n'
               '\n\tXYZ: {0}\n\tXYZ_w: {1}\n\tL_A: {2}\n\tY_b: {3}'
               '\n\tSurround: {4}').format(XYZ, XYZ_w, L_A, Y_b, surround))
  specification = colour.XYZ_to_CIECAM02(XYZ, XYZ_w, L_A, Y_b, surround)
  print(specification)
  
  print('\n')
  
  J = 41.73109113
  C = 0.10470776
  h = 219.04843266
  message_box(('Converting to "CIE XYZ" tristimulus values using given '
               'parameters:\n'
               '\n\tJ: {0}\n\tC: {1}\n\th: {2}\n\tXYZ_w: {3}\n\tL_A: {4}'
               '\n\tY_b: {5}').format(J, C, h, XYZ_w, L_A, Y_b))
  print(colour.CIECAM02_to_XYZ(J, C, h, XYZ_w, L_A, Y_b))
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """
  Showcases *CIECAM02* colour appearance model computations.
  """
  
  import colour
  from colour.utilities.verbose import message_box
  
  message_box('"CIECAM02" Colour Appearance Model Computations')
  
  XYZ = (19.01, 20.00, 21.78)
  XYZ_w = (95.05, 100.00, 108.88)
  L_A = 318.31
  Y_b = 20.0
  surround = colour.CIECAM02_VIEWING_CONDITIONS['Average']
  message_box(('Converting to "CIECAM02" colour appearance model specification '
               'using given parameters:\n'
               '\n\tXYZ: {0}\n\tXYZ_w: {1}\n\tL_A: {2}\n\tY_b: {3}'
               '\n\tSurround: {4}').format(XYZ, XYZ_w, L_A, Y_b, surround))
  specification = colour.XYZ_to_CIECAM02(XYZ, XYZ_w, L_A, Y_b, surround)
  print(specification)
  
  print('\n')
  
  J = 41.73109113
  C = 0.10470776
  h = 219.04843266
  specification = colour.CIECAM02_Specification(J, C, h)
  message_box(('Converting to "CIE XYZ" tristimulus values using given '
               'parameters:\n'
               '\n\tJ: {0}\n\tC: {1}\n\th: {2}\n\tXYZ_w: {3}\n\tL_A: {4}'
               '\n\tY_b: {5}').format(J, C, h, XYZ_w, L_A, Y_b))
  print(colour.CIECAM02_to_XYZ(specification, XYZ_w, L_A, Y_b))
  
subject: Fix "examples_ciecam02" example module.