very simple template to test PySide widgets like
QIntValidator, QLabel, QLineEdit, QVBoxLayout, QGroupBox
PySide is the official LGPL-licensed version of PyQT
for more info see:
tested with Python27/33 and PySide112 by vegaseat 07feb2013
from PySide.QtCore import *
from PySide.QtGui import *
# replace  with sys.argv for commandline
app = QApplication()
# ----- start your widget test code ----
group_box = QGroupBox("accepts only integers")
label = QLabel()
edit = QLineEdit()
# now edit will only accept integers
# connect edit to label
# update label each time the text has been edited
vbox = QVBoxLayout()
# ---- end of widget test code -----
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