如何通过迭代从QLineEdit追加列表(只显示最后一个值)

from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QLineEdit, QListWidget
from PyQt5.QtCore import Qt

class MyWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("迭代追加列表示例")
        
        layout = QVBoxLayout()
        
        self.lineEdit = QLineEdit()
        self.listWidget = QListWidget()
        
        layout.addWidget(self.lineEdit)
        layout.addWidget(self.listWidget)
        
        self.setLayout(layout)
        
        self.lineEdit.textChanged.connect(self.handleTextChanged)
        
    def handleTextChanged(self, text):
        self.listWidget.clear()
        
        if text:
            self.listWidget.addItem(text)
            
        if self.listWidget.count() > 1:
            self.listWidget.takeItem(0)
            
        self.listWidget.scrollToBottom()

if __name__ == "__main__":
    app = QApplication([])
    widget = MyWidget()
    widget.show()
    app.exec_()