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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                # PyQt 單選按鈕 > 原文: [https://pythonbasics.org/pyqt-radiobutton/](https://pythonbasics.org/pyqt-radiobutton/) PyQT `QRadioButton`是一個簡單的單選按鈕。 通常,當只有一個選項(而不是復選框)時才使用。 在 qt 中,復選框始終具有圓形按鈕和`QRadioButton("Australia")`之類的標簽。 ![pyqt radiobutton QRadioButton](https://img.kancloud.cn/13/3d/133d9554df6e9e42e9daeaa3e01f9d81_264x96.jpg) ## 單選按鈕 ### PyQT 單選按鈕示例 下面的代碼創建 3 個單選按鈕。 它將 3 個單選按鈕添加到網格中。 如果單擊任何單選按鈕,它將調用方法`onClicked()`。 使用`radiobutton.toggled.connect(self.onClicked)`將單選按鈕連接到該方法。 ```py 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_()) ``` [下載示例](https://gum.co/pysqtsamples)
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