spinbox_slider_progressorBar

import sys

from PySide2.QtWidgets import (QApplication, QWidget, QHBoxLayout,
                               QSpinBox, QSlider, QProgressBar)

from PySide2.QtCore import Qt


class MainWindow(QWidget):
    def __init__(self, parent = None):
        QWidget.__init__(self, parent)
        
        self.spin = QSpinBox()
        self.spin.setRange(0, 100)
        
        self.slider = QSlider(Qt.Horizontal)
        self.slider.setRange(0, 100)
        
        self.progressBar = QProgressBar()
        self.progressBar.setAlignment(Qt.AlignCenter)
        self.progressBar.setRange(0, 100)
        
        self.spin.valueChanged.connect(self.progressBar.setValue)
        self.spin.valueChanged.connect(self.slider.setValue)
        self.slider.valueChanged.connect(self.spin.setValue)
        self.spin.valueChanged.connect(self.valueChanged)
        
        layout = QHBoxLayout()
        layout.addWidget(self.spin)
        layout.addWidget(self.slider)
        layout.addWidget(self.progressBar)
        
        self.setLayout(layout)
        self.setWindowTitle("Spin Slider progressBar Example")
        
    def valueChanged(self, value):
        print('valueChanged: value: ', value)
        self.slider.setValue(value)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    
    mainWindow = MainWindow()
    mainWindow.show()
    app.exec_()
    
    pass