Force Qt/PyQt/PySide QTabWidget to resize to active tab

Question

I have a QTabWidget working correctly except that it doesn\'t re-size how I would expect it.

There are 2 tabs in the widget. Each has a QVBoxLayout with widgets in

Answer 1

This should do the trick; change the size policy depending on which tab is active.

def __init__(self):
    super(Widget, self).__init__()
    self.setupUi(self)
    self.tabWidget_2.currentChanged.connect(self.updateSizes)

def updateSizes(self):
    for i in range(self.tabWidget_2.count()):
        self.tabWidget_2.widget(i).setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)

    current = self.tabWidget_2.currentWidget()
    current.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum)