[PyQt] objectName properties set in QML not accessible in python

Russell Warren russ at perspexis.com
Thu Nov 9 15:31:58 GMT 2017

When you set the `objectName` property of a QObject that has been
registered for QML use with `qmlRegisterType`, the resulting `objectName`
is not accessible in python.

See this small self-contained example of the issue:


Although this can be worked around by defining a replacement `objectName`
property in python (see below), it seems like this should not be required.
Equivalent C++ code, for example, has no issue accessing the objectName
that was set in QML.

The workaround is to use alternative/back-door means to set/get the
`QObject.objectName` property with something like this replacement property
definition in the registered class:

    def objectName(self):
        return QtCore.QObject.objectName(self)

    def objectName(self, objectName):
        QtCore.QObject.setObjectName(self, objectName)

Is there a fundamental reason that objectName can't be accessed in PyQt? It
would be nice to not have to use that workaround.

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