Tabs are very useful in graphical applications. They appear in webbrowsers, text editors and any other apps.  To create a tabbed window, you need to call the  QTabWidget()  function.  Every tab is a QWidget() which you have seen before.  You can connect the QWidgets with the QTabWidget with the function:

tabs.addTab(tab1,"Tab 1")

where the first parameter is the tab object and the second the name that appears on the screen. We added some buttons to the first tab (QWidget).

Related course:
Practice Python with interactive exercises

Example code:

from PyQt4 import QtGui
from PyQt4 import QtCore
import sys
def main():
app 	= QtGui.QApplication(sys.argv)
    tabs	= QtGui.QTabWidget()
    
    # Create tabs
    tab1	= QtGui.QWidget()
    tab2	= QtGui.QWidget()
    tab3	= QtGui.QWidget()
    tab4	= QtGui.QWidget()
    
    # Resize width and height
    tabs.resize(250, 150)
# Set layout of first tab
    vBoxlayout	= QtGui.QVBoxLayout()
    pushButton1 = QtGui.QPushButton("Start")
    pushButton2 = QtGui.QPushButton("Settings")
    pushButton3 = QtGui.QPushButton("Stop")
    vBoxlayout.addWidget(pushButton1)
    vBoxlayout.addWidget(pushButton2)
    vBoxlayout.addWidget(pushButton3)
    tab1.setLayout(vBoxlayout)
    
    # Add tabs
    tabs.addTab(tab1,"Tab 1")
    tabs.addTab(tab2,"Tab 2")
    tabs.addTab(tab3,"Tab 3")
    tabs.addTab(tab4,"Tab 4")
    
    # Set title and show
    tabs.setWindowTitle('PyQt QTabWidget @ pythonspot.com')
    tabs.show()
    
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()

Result:

PyQT Tabs

Download PyQT Code (Bulk Collection)