First of all, how do you expect anybody to know how your "Tweet" class behaves just by knowing what the class is called?

Second of all this is the next thread in series where you show no understanding of the model-view concept and despite being asked continuously if you are sure if you should use it and why you place widgets inside each index of the list you don't answer but instead post yet another thread related to an incorrect usage of the list view. What you are trying to do is expecting a coffee machine to bake cookies. Coffee machine is for making coffee, not for baking cookies. List view is not for placing widgets inside it, use QScrollArea instead for God's sake!