PyQT QRadioButton is a simple radio button. This is typically used when only one option is possible, as opposed to a checkbox.

In qt the checkbox always has the round button and the label like QRadioButton("Australia").

pyqt radiobutton QRadioButton

Related Course: Create GUI Apps with Python PyQt5

Radio Button

PyQT radio button example

The code below creates 3 radio buttons. It adds 3 radio buttons to a grid.
If you click on any of the radio buttons, it calls the method onClicked(). The radio button is connected to that method using radiobutton.toggled.connect(self.onClicked). 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
from PyQt5.QtWidgets import *
import sys

class Window(QWidget):
    def __init__(self):
        QWidget.__init__(self)
        layout = QGridLayout()
        self.setLayout(layout)

        radiobutton = QRadioButton("Australia")
        radiobutton.setChecked(True)
        radiobutton.country = "Australia"
        radiobutton.toggled.connect(self.onClicked)
        layout.addWidget(radiobutton, 0, 0)

        radiobutton = QRadioButton("China")
        radiobutton.country = "China"
        radiobutton.toggled.connect(self.onClicked)
        layout.addWidget(radiobutton, 0, 1)

        radiobutton = QRadioButton("Japan")
        radiobutton.country = "Japan"
        radiobutton.toggled.connect(self.onClicked)
        layout.addWidget(radiobutton, 0, 2)

    def onClicked(self):
        radioButton = self.sender()
        if radioButton.isChecked():
            print("Country is %s" % (radioButton.country))

app = QApplication(sys.argv)
screen = Window()
screen.show()
sys.exit(app.exec_())

If you are new to Python PyQt, then I highly recommend this book.

Download Examples