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

Make comm manager (mostly) independent of InteractiveShell...

Make comm manager (mostly) independent of InteractiveShell This makes it possible to use comms from wrapper kernels, without instantiating the full IPython shell machinery. The one remaining place where we need a reference to shell is to fire pre_execute and post_execute hooks (which are needed to get mpl figures right). This is a pure IPythonism, that it should be safe to ignore if shell is not set.

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      """ A Qt API selector that can be used to switch between PyQt4/5 and PySide.

      This uses the ETS 4.0 selection pattern of:

      PySide first, PyQt4 (API v2.) second, then PyQt5.

      Do not use this if you need PyQt4 with the old QString/QVariant API.

      """

      import os

      from IPython.external.qt_loaders import (load_qt, QT_API_PYSIDE,

                                               QT_API_PYQT, QT_API_PYQT5)

      QT_API = os.environ.get('QT_API', None)

      if QT_API not in [QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5, None]:

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

                             (QT_API, QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5))

      if QT_API is None:

          api_opts = [QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5]

      else:

          api_opts = [QT_API]

      QtCore, QtGui, QtSvg, QT_API = load_qt(api_opts)

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				""" A Qt API selector that can be used to switch between PyQt4/5 and PySide.

				This uses the ETS 4.0 selection pattern of:
				PySide first, PyQt4 (API v2.) second, then PyQt5.

				Do not use this if you need PyQt4 with the old QString/QVariant API.
				"""

				import os

				from IPython.external.qt_loaders import (load_qt, QT_API_PYSIDE,
				QT_API_PYQT, QT_API_PYQT5)

				QT_API = os.environ.get('QT_API', None)
				if QT_API not in [QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5, None]:
				raise RuntimeError("Invalid Qt API %r, valid values are: %r, %r, %r" %
				(QT_API, QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5))
				if QT_API is None:
				api_opts = [QT_API_PYSIDE, QT_API_PYQT, QT_API_PYQT5]
				else:
				api_opts = [QT_API]

				QtCore, QtGui, QtSvg, QT_API = load_qt(api_opts)