[FIXED] Issue in Pyqt with next and previous Pages

Issue

so I'm currently working on a little project but I have an issue and all what I've tried did not work. I have 2 files : Page1test :

from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QPushButton, QWidget, QLabel
import sys

from page2test import Page2

class Page1(QWidget):
    def __init__(self):
        super(Page1, self).__init__()
        self.setWindowTitle("Page 1")

        label1 = QLabel(self)
        label1.setText("\n PAGE 1")

        self.btn_inMyApp = QPushButton ('Next page', self)
        self.btn_inMyApp.setGeometry(1500,800,275,125)
        self.btn_inMyApp.clicked.connect(self.closePage1_OpenPage2)
        self.show()

    def closePage1_OpenPage2(self):
        self.Open = Page2()
        self.Open.showMaximized()
        self.close()

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    window = Page1()
    window.showMaximized()
    sys.exit(app.exec_())

And page2test :

from PyQt5.QtWidgets import QPushButton, QWidget, QLabel

from Page1test import Page1

class Page2(QWidget):
    def __init__(self):
        super(Page2, self).__init__()
        self.setWindowTitle("Test window principale")

        label1 = QLabel(self)
        label1.setText("\n Page2")

        self.btn_inMyApp = QPushButton ('previous Page', self)
        self.btn_inMyApp.setGeometry(1500,800,275,125)
        self.btn_inMyApp.clicked.connect(self.closePage2_OpenPage1)
        self.show()

    def closePage2_OpenPage1(self):
        self.Open = Page1()
        self.Open.showMaximized()
        self.close()

I run the code of Page1test : empty window with just a Qpushbutton "Next Page", goal : we click on it and it open Page 2 (and close Page 1). And, when we are in Page 2, we have A Qpushbutton with "Previous Page" and when we click on it, it opens page 1, and close Page 2. Like a loop. But, when I run the code, it returns an error : cannot import name 'Page2' from partially initialized module 'page2test' (most likely due to a circular import)

and I have no idea how to fix it... If someone had an idea, it would be really helpful.

Solution

So, I've finally found the solution, that was not so difficult in the end. Here it is (if it can help someone) :

Instead of making 2 files, I've done just 1 file. Here is the code :

from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QPushButton, QWidget, QLabel, QMainWindow
import sys


class MyApp(QWidget):
    def __init__(self):
        super(MyApp, self).__init__()
        self.setWindowTitle("Page 1")

        label1 = QLabel(self)
        label1.setText("\n PAGE 1")

        self.btn_inMyApp = QPushButton ('Page suivante', self)
        self.btn_inMyApp.setGeometry(1500,800,275,125)
        self.btn_inMyApp.clicked.connect(self.closePage1_OpenPage2)
        self.show()

    def btn1_onClicked(self):
        pass

    def closePage1_OpenPage2(self):
        self.Open = NewApp()
        self.Open.showMaximized()
        self.close()


class NewApp(QMainWindow):
    def __init__(self):
        super(NewApp, self).__init__()
        self.setWindowTitle("Test window principale")

        label1 = QLabel(self)
        label1.setText("\n Page2")

        self.btn_inMyApp = QPushButton ('previous Page', self)
        self.btn_inMyApp.setGeometry(1500,800,275,125)
        self.btn_inMyApp.clicked.connect(self.closePage2_OpenPage1)
        self.show()

    def closePage2_OpenPage1(self):
        self.Open = MyApp()
        self.Open.showMaximized()
        self.close()


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    window = MyApp()
    window.showMaximized()
    sys.exit(app.exec_())
```

Answered By - user17750677