• PromoteLabelTest.py 提升的类

import sys
from PyQt5.QtWidgets import QApplication, QWidget,QVBoxLayout,QTextEdit,QPushButton,QHBoxLayout,QFileDialog,QLabel

class PromoteLabel(QLabel):
    def __init__(self,parent = None):
        super().__init__(parent)
        self.setText("111111")
        self.setStyleSheet("background-color:rgb(100,100,100);")

• T.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Form</class>
 <widget class="QWidget" name="Form">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>520</width>
    <height>431</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Form</s