问如何在PIL.Image画布- PyQt5中插入PyQt

EN

class MplCanvas(FigureCanvasQTAgg):
     def __init__(self, parent=None, width=8, height=6, dpi=100):
         fig = Figure(figsize=(width, height), dpi=dpi)
         self.axes = fig.add_subplot(111)
         super(MplCanvas, self).__init__(fig)

class MainWindow(QtWidgets.QMainWindow):
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)

        self.canvas = MplCanvas(self, width=12, height=8, dpi=100)

        self.layout_plot.addWidget(self.canvas)
        self.show()

import PIL
from PIL import Image

percent = 20  # Percent for gauge
output_file_name = 'new_gauge.png'


percent = percent / 100
rotation = 180 * percent  # 180 degrees because the gauge is half a circle
rotation = 90 - rotation  # Factor in the needle graphic pointing to 50 (90 degrees)

dial = Image.open('needle.png')
dial = dial.rotate(rotation, resample=PIL.Image.BICUBIC, center=loc)  # Rotate needle

gauge = Image.open('gauge.png')
gauge.paste(dial, mask=dial)  # Paste needle onto gauge
gauge.save(output_file_name)

dial = Image.open('needle.png')
dial = dial.rotate(rotation, resample=PIL.Image.BICUBIC, center=loc)  # Rotate needle

gauge = Image.open('gauge.png')
gauge.paste(dial, mask=dial)  # Paste needle onto gauge
self.layout_plot.removeWidget(self.canvas)
self.layout_plot.addWidget(gauge)
self.canvas.draw()

TypeError: addWidget(self, QWidget, stretch: int = 0, alignment: Union[Qt.Alignment, Qt.AlignmentFlag] = Qt.Alignment()): argument 1 has unexpected type 'PngImageFile'