pyqt5 从本地选择图片 并显示在label上的实例

import sysfrom PyQt5 import QtWidgets, QtCore, QtGuifrom PyQt5.QtGui import *from PyQt5.QtWidgets import *from PyQt5.QtCore import *class picture(QWidget):  def __init__(self):    super(picture, self).__init__()    self.resize(600, 400)    self.setWindowTitle("label显示图片")    self.label = QLabel(self)    self.label.setText("  显示图片")    self.label.setFixedSize(300, 200)    self.label.move(160, 160)    self.label.setStyleSheet("QLabel{background:white;}"                 "QLabel{color:rgb(300,300,300,120);font-size:10px;font-weight:bold;font-family:宋体;}"                 )    btn = QPushButton(self)    btn.setText("打开图片")    btn.move(10, 30)    btn.clicked.connect(self.openimage)  def openimage(self):    imgName, imgType = QFileDialog.getOpenFileName(self, "打开图片", "", "*.jpg;;*.png;;All Files(*)")    jpg = QtGui.QPixmap(imgName).scaled(self.label.width(), self.label.height())    self.label.setPixmap(jpg)if __name__ == "__main__":  app = QtWidgets.QApplication(sys.argv)  my = picture()  my.show()  sys.exit(app.exec_())