upstream/ipython Files · IPython/nbconvert/postprocessors/__init__.py

Backport PR : Add support for PyQt5....

Backport PR : Add support for PyQt5. This PR adds the new `QT_API_PYQT5` to `IPython/external/qt_loaders.py ` and allows to embed the IPython console in Qt5 Applications. In case of PyQt5, the loader returns a union of `PyQt5.QtGui` and `PyQt5.QtWidgets` acting as a Qt4-QtGui compatibility module. One small fix to `InProcessChannel.__init__` was necessary though. For some reason, when constructing `QtInProcessShellChannel`, the `QtCore.QObject.__init__` initializer from `SuperQObject` indirectly calls the `InProcessChannel.__init__` function, which doesn't have a default constructor and thus fails. I assume this has something to do with the metaclass/multiple inheritance approach IPython uses on QObject. Adding a default value for `client` in `InProcessChannel.__init__` solved the problem for me.

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             __init__.py
        
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             / IPython / nbconvert / postprocessors / __init__.py
          
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      from .base import PostProcessorBase

      from .pdf import PDFPostProcessor

      # protect against unavailable tornado

      try:

          from .serve import ServePostProcessor

      except ImportError:

          pass

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				from .base import PostProcessorBase
				from .pdf import PDFPostProcessor

				# protect against unavailable tornado
				try:
				from .serve import ServePostProcessor
				except ImportError:
				pass