PyQt5-标签、按钮文字等大小不适应解决方法

1.首先引入模块

from PyQt5.QtWidgets import QApplication

     ##添加第一行代码即可解决
     QApplication.setAttribute(Qt.AA_EnableHighDpiScaling)#
    app = QtWidgets.QApplication(sys.argv)
    mainwindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(mainwindow)
    mainwindow.show()
    sys.exit(app.exec_())