def main():
"""Creates application and main window and sets application icon."""
app = QApplication(sys.argv)
app.setWindowIcon(QIcon('resources/img/icon.svg'))
window = MainWindow()
screen = QRect(app.desktop().availableGeometry())
x = screen.left() + (screen.width() - window.width()) / 2
y = screen.top() + (screen.height() - window.height()) / 2
window.move(x, y)
window.show()
sys.exit(app.exec_())
