old_contents: #------------------------------------------------------------------------------
  # Copyright (c) 2010, Enthought Inc
  # All rights reserved.
  #
  # This software is provided without warranty under the terms of the BSD license.
  
  #
  # Author: Enthought Inc
  # Description: Qt API selector. Can be used to switch between pyQt and PySide
  #------------------------------------------------------------------------------
  
  import os
  
  def prepare_pyqt4():
      # Set PySide compatible APIs.
      import sip
      sip.setapi('QString', 2)
      sip.setapi('QVariant', 2)
  
  qt_api = os.environ.get('QT_API')
  
  if qt_api is None:
      try:
          import PySide
          qt_api = 'pyside'
      except ImportError:
          try:
              prepare_pyqt4()
              import PyQt4
              qt_api = 'pyqt'
          except ImportError:
              raise ImportError('Cannot import PySide or PyQt4')
  
  elif qt_api == 'pyqt':
      prepare_pyqt4()
  
  elif qt_api != 'pyside':
      raise RuntimeError("Invalid Qt API %r, valid values are: 'pyqt' or 'pyside'"
                         % qt_api)
  
new_contents: #------------------------------------------------------------------------------
  # Copyright (c) 2010, Enthought Inc
  # All rights reserved.
  #
  # This software is provided without warranty under the terms of the BSD license.
  
  #
  # Author: Enthought Inc
  # Description: Qt API selector. Can be used to switch between pyQt and PySide
  #------------------------------------------------------------------------------
  
  import os
  
  def prepare_pyqt4():
      # Set PySide compatible APIs.
      import sip
      sip.setapi('QString', 2)
      sip.setapi('QVariant', 2)
      sip.setapi('QDate', 2)
  
  qt_api = os.environ.get('QT_API')
  
  if qt_api is None:
      try:
          import PySide
          qt_api = 'pyside'
      except ImportError:
          try:
              prepare_pyqt4()
              import PyQt4
              qt_api = 'pyqt'
          except ImportError:
              raise ImportError('Cannot import PySide or PyQt4')
  
  elif qt_api == 'pyqt':
      prepare_pyqt4()
  
  elif qt_api != 'pyside':
      raise RuntimeError("Invalid Qt API %r, valid values are: 'pyqt' or 'pyside'"
                         % qt_api)
  
subject: Set the sip QDate API for enaml interop.