Unicode 32 fonts do not render properly, shows garbage icon

from PySide2 import QtWidgets, QtGui

class Window(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.mainLayout = QtWidgets.QVBoxLayout()
        self.setLayout(self.mainLayout)
        font = 'materialdesignicons5-webfont.ttf'
        id = QtGui.QFontDatabase.addApplicationFont(font)
        code = r'0xf01c9'
        code = chr(int(code, 16))
        self.label = QtWidgets.QLabel(code)
        self.mainLayout.addWidget(self.label)
if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    win = Window()
    win.show()
    sys.exit(app.exec_())