LAYOUT.PY

import sys
from PySide.QtCore import *
from PySide.QtGui import *

class Widget(QWidget):

    def __init__(self, parent= None):
 
        super(Widget, self).__init__()
        self.setFixedHeight(200)

#Container Widget
        widget = QWidget()
#Layout of Container Widget
        layout = QVBoxLayout(self)
        for cnt in range(25):
            btn = QPushButton('Ping' + " "+ str(cnt))
            layout.addWidget(btn)
        widget.setLayout(layout)

#Scroll Area Properties
        scroll = QScrollArea()
        scroll.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)
        scroll.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        #scroll.setWidgetResizable(False)
        scroll.setWidget(widget)

#Scroll Area Layer add
        vLayout = QVBoxLayout(self)
        vLayout.addWidget(scroll)
        self.setLayout(vLayout)

if __name__ == "__main__" :
    app = QApplication(sys.argv)


dialog = Widget()
dialog.show()

app.exec_()