PyQt: RuntimeError: wrapped C/C++ object has been deleted

Question

If I run this code:

    #!/usr/local/bin/    python3

import sys 
from PyQt4.QtCore import *
from PyQt4.QtGui import *


class Window(QMainWindow):

    def          


        

Answer 1

In another case, the solution was to add all child objects to a detached layout first, and adding the layout to the parent layout as the last step. That is:

    l = QGridLayout()
    l.addWidget(QLabel("child1"), 0, 0)
    l.addWidget(QLabel("child2"), 0, 1)
    ...
    parentLayout.addLayout(l)