If click Eyes icon Show/Hide password (QPushButton)

I'm trying to create a function in a register and login form using QLineEdit to show and hide password if click a QPushButton. I'm a beginner in Python, I'm just trying to do it but it's very hard... My attempt is not good because if I click the eye button the password is shown, but if click again to hide it does not work.

from PyQt5 import QtCore, QtGui, QtWidgets, uic
from PyQt5.QtWidgets import QPushButton, QLineEdit
import sys
import pymysql
pymysql.install_as_MySQLdb()

class MyWindow(QtWidgets.QMainWindow):
    def __init__(self, maxWidth=None):
        super(MyWindow, self).__init__()
        uic.loadUi('MainWindow.ui', self)

        self.eyepass_show()
        self.eyepass_hide()

        self.btn_show_pwd.clicked.connect(self.eyepass_hide)
        self.btn_show_pwd.clicked.connect(self.eyepass_show)

    def eyepass_show(self):
        self.line_password.setEchoMode(QLineEdit.Normal)
        print('show pass')

    def eyepass_hide(self):
        self.line_password.setEchoMode(QLineEdit.Password)
        print('hide pass')


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

form password hide/show eye:

is hiding password is show but if click again to hide not work

Solution

Instead of creating two separate methods as eyepass_show and eyepass_hide, you can create a single function and toggle the visibility. Also, you are trying to connect the same signal twice to two different methods by self.btn_show_pwd.clicked.connect(self.eyepass_hide)and self.btn_show_pwd.clicked.connect(self.eyepass_show)

Try something like this:

from PyQt5 import QtCore, QtGui, QtWidgets, uic
from PyQt5.QtWidgets import QPushButton, QLineEdit
import sys
import pymysql
pymysql.install_as_MySQLdb()

class MyWindow(QtWidgets.QMainWindow):
    def __init__(self, maxWidth=None):
        super(MyWindow, self).__init__()
        uic.loadUi('MainWindow.ui', self)

        self.eyepass_show()
        self.eyepass_hide()
        self.btn_show_pwd.clicked.connect(self.toggleVisibility)
        
    def toggleVisibility(self):
        if self.line_password.echoMode()==QLineEdit.Normal:
            self.line_password.setEchoMode(QLineEdit.Password)
        else:
            self.line_password.setEchoMode(QLineEdit.Normal)

    #     self.btn_show_pwd.clicked.connect(self.eyepass_hide)
    #     self.btn_show_pwd.clicked.connect(self.eyepass_show)
    # 
    # def eyepass_show(self):
    #     self.line_password.setEchoMode(QLineEdit.Normal)
    #     print('show pass')
    # 
    # def eyepass_hide(self):
    #     self.line_password.setEchoMode(QLineEdit.Password)
    #     print('hide pass')


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