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    pyudev._qt_base
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    Base mixin class for Qt4,Qt5 support.

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    Generates an initializer to observer the given ``monitor``
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    ``parent`` is the parent :class:`~PyQt{4,5}.QtCore.QObject` of this
    object.  It is passed unchanged to the inherited constructor of
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    Class to generate a MonitorObserver class.
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        events into Qt signals:

        >>> from pyudev import Context, Monitor
        >>> from pyudev.pyqt4 import MonitorObserver
        >>> context = Context()
        >>> monitor = Monitor.from_netlink(context)
        >>> monitor.filter_by(subsystem='input')
        >>> observer = MonitorObserver(monitor)
        >>> def device_event(device):
        ...     print('event {0} on device {1}'.format(device.action, device))
        >>> observer.deviceEvent.connect(device_event)
        >>> monitor.start()

        This class is a child of :class:`~{PySide, PyQt{4,5}}.QtCore.QObject`.

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        PyQt{4,5} mainloop.

        This class inherits :class:`~PyQt{4,5}.QtCore.QObject` to turn device
        events into Qt signals:

        >>> from pyudev import Context, Monitor
        >>> from pyudev.pyqt4 import MonitorObserver
        >>> context = Context()
        >>> monitor = Monitor.from_netlink(context)
        >>> monitor.filter_by(subsystem='input')
        >>> observer = MonitorObserver(monitor)
        >>> def device_event(device):
        ...     print('event {0} on device {1}'.format(device.action, device))
        >>> observer.deviceEvent.connect(device_event)
        >>> monitor.start()

        This class is a child of :class:`~{PyQt{4,5}, PySide}.QtCore.QObject`.

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