PYQT实现上传图片，保存图片

代码如下 

from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sysclass MyWindow(QMainWindow):def __init__(self):super(MyWindow, self).__init__()self.setWindowTitle("图片处理")self.setGeometry(200, 200, 500, 400)self.central_widget = QWidget()self.setCentralWidget(self.central_widget)main_layout = QVBoxLayout()  # 整体的垂直布局# 上面两个 label 的水平布局label_layout = QHBoxLayout()self.label1 = QLabel()label_layout.addWidget(self.label1)  # 图片 1 居左self.label2 = QLabel()label_layout.addWidget(self.label2)  # 图片 2 居右main_layout.addLayout(label_layout)  # 将水平布局添加到垂直布局# 下面两个按钮的水平布局button_layout = QHBoxLayout()self.button1 = QPushButton("打开图片")self.button1.clicked.connect(self.open_image)button_layout.addWidget(self.button1)self.button2 = QPushButton("复制图片")self.button2.clicked.connect(self.copy_image)button_layout.addWidget(self.button2)main_layout.addLayout(button_layout)  # 将水平布局添加到垂直布局self.central_widget.setLayout(main_layout)  # 设置中央部件的布局def open_image(self):file_dialog = QFileDialog()file_path, _ = file_dialog.getOpenFileName(self, "选择图片", "", "Image Files (*.jpg *.png)")if file_path:pixmap = QPixmap(file_path)self.label1.setPixmap(pixmap)def copy_image(self):pixmap = self.label1.pixmap()if pixmap:self.label2.setPixmap(pixmap)if __name__ == "__main__":app = QApplication(sys.argv)window = MyWindow()window.show()sys.exit(app.exec_())