Перенос каретки в заданную позицию

from PyQt5 import QtCore, QtWidgets
 
class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(551, 301)
 
        self.textEdit = QtWidgets.QTextEdit(Dialog)
        self.textEdit.setGeometry(QtCore.QRect(10, 10, 530, 240))
        self.textEdit.setObjectName("textEdit")
 
        self.lineEdit = QtWidgets.QLineEdit(Dialog)
        self.lineEdit.setGeometry(QtCore.QRect(10, 260, 340, 20))
        self.lineEdit.setObjectName("lineEdit")
 
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(355, 256, 190, 30))
        self.pushButton.setObjectName("pushButton")
 
        self.retranslateUi(Dialog)
        self.pushButton.clicked.connect(self.handleButton)
        QtCore.QMetaObject.connectSlotsByName(Dialog)
 
    def handleButton(self):
        self.cursor = self.textEdit.textCursor()
 
        if len(self.textEdit.toPlainText()) == self.cursor.position():
            self.cursor.setPosition(0)
            self.textEdit.setTextCursor(self.cursor)
 
        print(self.textEdit.textCursor())
        self.textEdit.find(self.lineEdit.text())
 
    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "Искать"))
 
 
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Dialog = QtWidgets.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())