import sys

from PyQt5.QtWidgets import QApplication, QDialog, QMainWindow, QMessageBox

from PyQt5.uic import loadUi

from main_window_ui import Ui_MainWindow

class Window(QMainWindow, Ui_MainWindow):

def __init__(self, parent=None):

super().__init__(parent)

self.setupUi(self)

self.connectSignalsSlots()

def connectSignalsSlots(self):

self.action_Exit.triggered.connect(self.close)

self.action_Find_Replace.triggered.connect(self.findAndReplace)

self.action_About.triggered.connect(self.about)

def findAndReplace(self):

dialog = FindReplaceDialog(self)

dialog.exec()

def about(self):

QMessageBox.about(

self,

"About Sample Editor",

"<p>A sample text editor app built with:</p>"

"<p>- PyQt</p>"

"<p>- Qt Designer</p>"

"<p>- Python</p>",

)

class FindReplaceDialog(QDialog):

def __init__(self, parent=None):

super().__init__(parent)

loadUi("ui/find_replace.ui", self)

if __name__ == "__main__":

app = QApplication(sys.argv)

win = Window()

win.show()

sys.exit(app.exec())