PyQt加载UI文件

1.动态加载

import sysfrom PySide6 import QtCore,QtWidgetsfrom PySide6.QtWidgets import *from PySide6.QtCore import QFilefrom PySide6.QtUiTools import QUiLoaderclass readfile(QWidget):   def __init__(self):       super().__init__()       qfile=QFile("test.ui")       qfile.open(QFile.ReadOnly)       qfile.close()       self.ui=QUiLoader().load(qfile,self)           self.__create_connections()   def __create_connections(self):                   self.ui.pushButton.clicked.connect(self.open_file)         def open_file(self):             fname,_ = QFileDialog.getOpenFileName(self,"打开文件", '.')       if fname:                     self.ui.lineEdit.setText(fname)                         with open(fname,'r') as f:           content = f.read()           self.ui.textBrowser.setText(str(content))   if __name__ == '__main__':#QApplication.setAttribute(Qt.AA_EnableHighDpiScaling)#QApplication.setAttribute(Qt.AA_ShareOpenGLContexts)app = QApplication(sys.argv)w = readfile()w.show()     sys.exit(app.exec())

动态加载出有错误信息，但不影响运行

错误信息如下：

qt.pysideplugin: Environment variable PYSIDE_DESIGNER_PLUGINS is not set, bailing out.qt.pysideplugin: No instance of QPyDesignerCustomWidgetCollection was found.Qt WebEngine seems to be initialized from a plugin. Please set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute and QSGRendererInterface::OpenGLRhi using QQuickWindow::setGraphicsApi before constructing QGuiApplication.