I want to use the SizePolicy method to adjust my window. Here is my code: main_policy = QSizePolicy(QSizePolicy.Expanding,QSizePolicy.Expanding) self.setSizePolicy(main_policy) and this is my error: *main_policy = QSizePolicy(QSizePolicy.Expanding,QSizePolicy.Expanding) ^^^^^^^^^^^^^^^^^^^^^ AttributeError: type object 'QSizePolicy' has no attribute 'Expanding'* please help me fix this.Thanks<3 Continue reading...