How to draw a simple horizontal rule in a QWidget?

I just want to add a horizontal rule (just like <hr> in HTML, see below) to a QWidget.

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But I failed t开发者_如何学编程o find such a class in the documentation.

Could anyone give me example code?

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This can be done using a QFrame and setting the shape with setFrameShape(QFrame::HLine) and frame shadow using setFrameShadow(QFrame::Sunken). I just noticed that you are working in Python. My answer uses C++ syntax. Hopefully it is sufficient :)