---

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLineEdit
from PyQt5.QtGui import QFont, QIcon
from PyQt5.QtCore import Qt

class Window(QWidget):
    def __init__(self):
        super().__init__()

        self.setGeometry(200, 200, 700, 400)
        self.setWindowTitle('password')
        self.setWindowIcon(QIcon('images/python.png'))

        self.line_edit = QLineEdit(self)
        self.line_edit.setFont(QFont('Sanserif', 15))
        self.line_edit.setEchoMode(QLineEdit.EchoMode.Password)
        self.line_edit.textChanged.connect(lambda text: self.on_text_changed())

    def on_text_changed(self):
        text = self.line_edit.text()
        self.setWindowTitle(text)

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