PyQt5 QTabWidget布局

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import sys
from PyQt5.QtWidgets import QApplication, QTabWidget, QWidget
from PyQt5.QtWidgets import QLabel, QLineEdit, QRadioButton, QCheckBox
from PyQt5.QtWidgets import QHBoxLayout, QFormLayout


class Win(QTabWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.tab1 = QWidget()
        self.tab2 = QWidget()
        self.tab3 = QWidget()
        self.addTab(self.tab1, 'tab 1')
        self.addTab(self.tab2, 'tab 2')
        self.addTab(self.tab3, 'tab 3')
        self.currentChanged.connect(self.page)

        self.tab1_ui()
        self.tab2_ui()
        self.tab3_ui()

    def page(self):
        print(self.currentIndex())
        print(self.tabText(self.currentIndex()))

    def tab1_ui(self):
        layout = QFormLayout()
        layout.addRow('姓名', QLineEdit())
        layout.addRow('地址', QLineEdit())
        self.setTabText(0, '联系方式')
        self.tab1.setLayout(layout)

    def tab2_ui(self):
        layout = QFormLayout()
        sex = QHBoxLayout()
        sex.addWidget(QRadioButton('男'))
        sex.addWidget(QRadioButton('女'))
        layout.addRow('性别', sex)
        layout.addRow('生日', QLineEdit())
        self.setTabText(1, '个人详细信息')
        self.tab2.setLayout(layout)

    def tab3_ui(self):
        layout = QHBoxLayout()
        layout.addWidget(QLabel('科目'))
        layout.addWidget(QCheckBox('物理'))
        layout.addWidget(QCheckBox('高数'))
        self.setTabText(2, "教育程度")
        self.tab3.setLayout(layout)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = Win()
    win.show()
    sys.exit(app.exec_())