Use QState.assignProperty with dynamic values at runtime

Question

I have a question to using the QStateMachine-System of PyQt5 properly.

Using

State.assignProperty(aLineEdit, "plainText", "Some text")

allows to set "Some text" to the plainText-property whenever aState is active.

Question: What if "Some text" is not constant or known before execution? My intention is to pass a function (not unlike connecting a partial or lambda expression to an event) instead of a value that would yield the appropriate value when the state is entered.

My only idea to emulate this behavior is to connect a function that sets the property to aState.entered. However I'm not happy with that solution because it mixes up the places where properties are set and a reason to use the QStateMachine is to avoid having to manually set states yourself.

Answer 1

Your only idea is correct, but you should factor it out into a helper method so that the function is invoked at the time the state is entered.