PyQt5 - 更改预先存在的单选按钮的文本

在本文中，我们将了解如何在按下按钮时更改预先存在的单选按钮的文本，可以借助setText方法更改单选按钮的文本。

In order to do this we have to do the following –

1. Create a radio button
2. Create a push button
3. Add action to the push button such that when button is pressed a method should be called
4. Inside the method change the text of radio button with the help of setText method

下面是实现——

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
        # creating a radio button
        self.radio_button = QRadioButton("Radio button", self)
  
        # setting geometry of radio button
        self.radio_button.setGeometry(200, 150, 120, 40)
  
        # creating push button
        self.button = QPushButton("press", self)
  
        # adding action to push button
        self.button.pressed.connect(self.change)
  
        # setting geometry to button
        self.button.setGeometry(200, 200, 100, 40)
  
  
    # method called by push button
    def change(self):
  
        # change the text of radio button
        self.radio_button.setText("Changed")
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：