PySide:可以画一条平滑线QPainter吗？

from PySide2.QtWidgets import QApplication, QWidget
from PySide2.QtGui import QPainter, QPen
from PySide2.QtCore import Qt

class MyWidget(QWidget):
    def paintEvent(self, event):
        painter = QPainter(self)
        pen = QPen(Qt.black)
        pen.setWidth(2)
        pen.setCapStyle(Qt.RoundCap)
        pen.setJoinStyle(Qt.RoundJoin)
        painter.setPen(pen)
        
        points = [(10, 10), (50, 50), (100, 100), (150, 50), (190, 10)]
        painter.drawPolyline(points)

if __name__ == '__main__':
    app = QApplication([])
    widget = MyWidget()
    widget.show()
    app.exec_()