simple pyside test app

pyside.py

#!/usr/bin/env python

'''
required:
sudo apt-get install python python-pyside pyside-tools
'''

import sys
from PySide.QtGui import *

app = QApplication(sys.argv)

win = QWidget()

win.resize(320, 240)  
win.setWindowTitle("window title") 

# Create a Label and show it
label = QLabel("label", win)
label.show()

n = 0 
def sayHello():
    global n
    n += 1
    text = "Hello"+'!'*n
    label.setText(text)

# Create a button
button = QPushButton("Click me", win)

# Connect the button to the function
button.clicked.connect(sayHello)

# Show the button
button.show()

okButton = QPushButton("OK")
cancelButton = QPushButton("Cancel")

hbox = QHBoxLayout()
hbox.addStretch(1)
hbox.addWidget(okButton)
hbox.addWidget(cancelButton)

vbox = QVBoxLayout()
vbox.addWidget(label)
vbox.addWidget(button)
vbox.addStretch(1)
vbox.addLayout(hbox)

win.setLayout(vbox) 

win.show()

sys.exit(app.exec_())