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

restart channels on kernel restart...

restart channels on kernel restart generally not necessary, but sometimes the kernel connection can be dirty. We have only seen this by starting a qtconsole via %qtconsole, then killing the kernel, at which point the original notebook's connection (at the zmq level) is never restored to the new kernel at the same endpoint. It's weird, and probably a zmq bug, but a simple reconnect seems to solve it.

Chris Beaumont - - Load All Authors

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

      This uses the ETS 4.0 selection pattern of:

      PySide first, PyQt with API v2. second.

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

      """

      import os

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

                                               QT_API_PYQT)

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

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

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

                             (QT_API, QT_API_PYSIDE, QT_API_PYQT))

      if QT_API is None:

          api_opts = [QT_API_PYSIDE, QT_API_PYQT]

      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 PyQt and PySide.

				This uses the ETS 4.0 selection pattern of:
				PySide first, PyQt with API v2. second.

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

				import os

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

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

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