import sys
from PySide2.QtGui import QIcon
from PySide2 import QtWidgets

class Icon(QtWidgets.QWidget):
	def __init__(self, parent=None):
		QtWidgets.QWidget.__init__(self, parent)

		self.setGeometry(300, 300, 250, 150)
		self.setWindowTitle("Qt Window")
		self.setWindowIcon(QIcon('QtIcon.JPG'))


if __name__ == "__main__":
	app = QtWidgets.QApplication(sys.argv)
	icon = Icon()
	icon.resize(1000, 500)
	icon.show()
	sys.exit(app.exec_())