QLineEdit单行文本框

import sys
import time
from PyQt6.QtGui import QValidator,QIntValidator
from PyQt6.QtWidgets import QApplication,QLabel,QLineEdit
from PyQt6 import uic

if __name__ == '__main__':
    app=QApplication(sys.argv)
    ui=uic.loadUi("./QLine单行文本框.ui")
    mylineEdit:QLineEdit=ui.lineEdit #lineEdit
    mylineEdit2: QLineEdit = ui.lineEdit_2  # lineEdit_2
    mylineEdit.setValidator(QIntValidator())#设置文本框验证器
    ui.show()
    mylineEdit.setText("python222")#设置文本框内容
    print(mylineEdit.text())#获取文本框内容
    mylineEdit.clear()#清除文本框内容

    mylineEdit2.setFocus()#使文本框得到焦点
    sys.exit(app.exec())