from PyQt5.QtWidgets import QApplication, QVBoxLayout, QPushButton, QWidget
from pyqt_modern_slider import ModernSlider

if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    example = ModernSlider()
    btn = QPushButton('Play')
    lay = QVBoxLayout()
    lay.addWidget(example)
    lay.addWidget(btn)
    mainWidget = QWidget()
    mainWidget.setLayout(lay)
    mainWidget.show()
    app.exec_()