old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  """
  Common Colour Models Utilities
  ==============================
  
  Defines various colour models common utilities.
  
  See Also
  --------
  `RGB Colourspaces IPython Notebook
  <http://nbviewer.ipython.org/github/colour-science/colour-ipython/blob/master/notebooks/models/rgb.ipynb>`_  # noqa
  """
  
  from __future__ import division, unicode_literals
  
  import numpy as np
  
  from colour.models import RGB_COLOURSPACES, XYZ_to_RGB
  
  __author__ = 'Colour Developers'
  __copyright__ = 'Copyright (C) 2013 - 2014 - Colour Developers'
  __license__ = 'New BSD License - http://opensource.org/licenses/BSD-3-Clause'
  __maintainer__ = 'Colour Developers'
  __email__ = 'colour-science@googlegroups.com'
  __status__ = 'Production'
  
  __all__ = ['XYZ_to_sRGB']
  
  
  def XYZ_to_sRGB(XYZ,
                  illuminant=RGB_COLOURSPACES.get('sRGB').whitepoint,
                  chromatic_adaptation_method='CAT02',
                  transfer_function=True):
      """
      Converts from *CIE XYZ* colourspace to *sRGB* colourspace.
  
      Parameters
      ----------
      XYZ : array_like, (3,)
          *CIE XYZ* colourspace matrix.
      illuminant : array_like, optional
          Source illuminant chromaticity coordinates.
      chromatic_adaptation_method : unicode, optional
          {'CAT02', 'XYZ Scaling', 'Von Kries', 'Bradford', 'Sharp', 'Fairchild,
          'CMCCAT97', 'CMCCAT2000', 'Bianco', 'Bianco PC'},
          *Chromatic adaptation* method.
      transfer_function : bool, optional
          Apply *sRGB* *transfer function*.
  
      Returns
      -------
      ndarray, (3,)
          *sRGB* colour matrix.
  
      Notes
      -----
      -   Input *CIE XYZ* colourspace matrix is in domain [0, 1].
  
      Examples
      --------
      >>> XYZ = np.array([0.1180583421, 0.1034, 0.0515089229])
      >>> XYZ_to_sRGB(XYZ)  # doctest: +ELLIPSIS
      array([ 0.4822488...,  0.3165197...,  0.2207051...])
      """
  
      sRGB = RGB_COLOURSPACES.get('sRGB')
      return XYZ_to_RGB(XYZ,
                        illuminant,
                        sRGB.whitepoint,
                        sRGB.to_RGB,
                        chromatic_adaptation_method,
                        sRGB.transfer_function if transfer_function else None)
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  """
  Common Colour Models Utilities
  ==============================
  
  Defines various colour models common utilities.
  
  See Also
  --------
  `RGB Colourspaces IPython Notebook
  <http://nbviewer.ipython.org/github/colour-science/colour-ipython/blob/master/notebooks/models/rgb.ipynb>`_  # noqa
  """
  
  from __future__ import division, unicode_literals
  
  import numpy as np
  
  from colour.models import RGB_COLOURSPACES, XYZ_to_RGB
  
  __author__ = 'Colour Developers'
  __copyright__ = 'Copyright (C) 2013 - 2014 - Colour Developers'
  __license__ = 'New BSD License - http://opensource.org/licenses/BSD-3-Clause'
  __maintainer__ = 'Colour Developers'
  __email__ = 'colour-science@googlegroups.com'
  __status__ = 'Production'
  
  __all__ = ['XYZ_to_sRGB']
  
  
  def XYZ_to_sRGB(XYZ,
                  illuminant=RGB_COLOURSPACES.get('sRGB').whitepoint,
                  chromatic_adaptation_method='CAT02',
                  transfer_function=True):
      """
      Converts from *CIE XYZ* colourspace to *sRGB* colourspace.
  
      Parameters
      ----------
      XYZ : array_like, (3,)
          *CIE XYZ* colourspace matrix.
      illuminant : array_like, optional
          Source illuminant chromaticity coordinates.
      chromatic_adaptation_method : unicode, optional
          {'CAT02', 'XYZ Scaling', 'Von Kries', 'Bradford', 'Sharp', 'Fairchild,
          'CMCCAT97', 'CMCCAT2000', 'Bianco', 'Bianco PC'},
          *Chromatic adaptation* method.
      transfer_function : bool, optional
          Apply *sRGB* *transfer function*.
  
      Returns
      -------
      ndarray, (3,)
          *sRGB* colour matrix.
  
      Notes
      -----
      -   Input *CIE XYZ* colourspace matrix is in domain [0, 1].
  
      Examples
      --------
      >>> XYZ = np.array([0.07049534, 0.1008, 0.09558313])
      >>> XYZ_to_sRGB(XYZ)  # doctest: +ELLIPSIS
      array([ 0.1750135...,  0.3881879...,  0.3216195...])
      """
  
      sRGB = RGB_COLOURSPACES.get('sRGB')
      return XYZ_to_RGB(XYZ,
                        illuminant,
                        sRGB.whitepoint,
                        sRGB.to_RGB,
                        chromatic_adaptation_method,
                        sRGB.transfer_function if transfer_function else None)
  
subject: Use consistent data in "colour.models.common" module doc tests.