upstream/ipython Files · IPython/external/qt.py

add DirectView.importer contextmanager, demote targets to mutable flag...

add DirectView.importer contextmanager, demote targets to mutable flag * @require now also takes modules, and will import * IPython.zmq.parallel is the new entrypoint, not client

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             qt.py
        
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      """ A Qt API selector that can be used to switch between PyQt and PySide.

      """

      import os

      # Available APIs.

      QT_API_PYQT = 'pyqt'

      QT_API_PYSIDE = 'pyside'

      # Use PyQt by default until PySide is stable.

      QT_API = os.environ.get('QT_API', QT_API_PYQT)

      if QT_API == QT_API_PYQT:

          # For PySide compatibility, use the new-style string API that automatically

          # converts QStrings to Unicode Python strings. Also, automatically unpack

          # QVariants to their underlying objects.

          import sip

          sip.setapi('QString', 2)

          sip.setapi('QVariant', 2)

          from PyQt4 import QtCore, QtGui, QtSvg

          # Alias PyQt-specific functions for PySide compatibility.

          QtCore.Signal = QtCore.pyqtSignal

          QtCore.Slot = QtCore.pyqtSlot

      elif QT_API == QT_API_PYSIDE:

          from PySide import QtCore, QtGui, QtSvg

      else:

          raise RuntimeError('Invalid Qt API %r, valid values are: %r or %r' % 

                             (QT_API, QT_API_PYQT, QT_API_PYSIDE))

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				""" A Qt API selector that can be used to switch between PyQt and PySide.
				"""

				import os

				# Available APIs.
				QT_API_PYQT = 'pyqt'
				QT_API_PYSIDE = 'pyside'

				# Use PyQt by default until PySide is stable.
				QT_API = os.environ.get('QT_API', QT_API_PYQT)

				if QT_API == QT_API_PYQT:
				# For PySide compatibility, use the new-style string API that automatically
				# converts QStrings to Unicode Python strings. Also, automatically unpack
				# QVariants to their underlying objects.
				import sip
				sip.setapi('QString', 2)
				sip.setapi('QVariant', 2)

				from PyQt4 import QtCore, QtGui, QtSvg

				# Alias PyQt-specific functions for PySide compatibility.
				QtCore.Signal = QtCore.pyqtSignal
				QtCore.Slot = QtCore.pyqtSlot

				elif QT_API == QT_API_PYSIDE:
				from PySide import QtCore, QtGui, QtSvg

				else:
				raise RuntimeError('Invalid Qt API %r, valid values are: %r or %r' %
				(QT_API, QT_API_PYQT, QT_API_PYSIDE))