How to remove property of ui component in pyside/pyqt?

Question

I have set property to QLineEdit as

self.ui.txtName.setProperty('rules', 'required')

I want to remove this property dynamically, is there any way to do so,

Answer 1

Docs say:

...

A property can be removed from an instance by passing the property name and an invalid QVariant value to QObject::setProperty(). The default constructor for QVariant constructs an invalid QVariant.

and this works for PyQt:

self.ui.txtName.setProperty("rules", QtCore.QVariant())
#or 
self.ui.txtName.setProperty("rules", None)