test_push.py

from PySide import QtGui, QtCore
import sys

class ExampleUI(QtGui.QMainWindow):
	def __init__(self):
		QtGui.QMainWindow.__init__(self)

		# Main dialog that houses all our widgets and info
		self.mainDialog = QtGui.QDialog()
		self.mainDialog.resize(650, 550)
		self.mainDialog.setWindowTitle("Exporter")
		self.mainDialog.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
		self.mainDialog.setStyleSheet('font-size: 8pt;')

		# Buttons
		btnExportSelection      = QtGui.QPushButton('Export Selection')
		btnExportAll            = QtGui.QPushButton('Export All')

		# Layouts

		exportBtnLayout         = QtGui.QHBoxLayout()
		exportBtnLayout.addWidget(btnExportSelection)
		exportBtnLayout.addWidget(btnExportAll)

		masterLayout            = QtGui.QVBoxLayout()
		masterLayout.addLayout(exportBtnLayout)

		btnExportSelection.pressed.connect(self.exportSelected)

		# Set the main dialog
		self.mainDialog.setLayout(masterLayout)


	def show(self):
		self.mainDialog.show()

	def exportSelected(self):
		print 'Exporting stuff here'
		QtGui.QMessageBox.information(self.mainDialog, 'info', 'info here')

def main():
	global window
	window = ExampleUI()
	window.show()

if __name__ == "__main__":
	main()