Global Variables Handling across PyQt6 Windows

This demo program shows how to handle global variables across files or PyQt6 windows and execute a function from another file.

The output:

The code:

config.py:

1 2	a = 0 b = "empty"

update.py:

1 2 3 4 5 6 7 8 9 10 11

import config config.a = 10 config.b = "alphabet" def update(arg1, arg2): config.a = arg1 config.b = arg2 def add(arg1, arg2): return arg1 + arg2

main.py:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

from imports import * from main1 import WindowApp1 import config import update class WindowApp(a.QMainWindow): def __init__(self, parent=None): super().__init__() self.setWindowTitle("Post 31") self.setFixedSize(320, 245) lbla = a.QLabel('Global a: ', self) lbla.setGeometry(25, 55, 100, 30) self.txta = a.QLineEdit(str(config.a), self) self.txta.setGeometry(100, 55, 50, 30) self.lbla_r = a.QLabel(str(config.a), self) self.lbla_r.setGeometry(170, 55, 50, 30) lblb = a.QLabel('Global b: ', self) lblb.setGeometry(25, 100, 100, 30) self.txtb = a.QLineEdit(config.b, self) self.txtb.setGeometry(100, 100, 50, 30) self.lblb_r = a.QLabel(config.b, self) self.lblb_r.setGeometry(170, 100, 50, 30) self.pblogin = a.QPushButton('Login', self) self.pblogin.setGeometry(50, 195, 65, 25) self.pblogin.clicked.connect(self.onClick_pb3) pbcanc = a.QPushButton('Update', self) pbcanc.setGeometry(125, 195, 65, 25) pbcanc.clicked.connect(self.onClick_pb4) pbcalc = a.QPushButton('Function', self) pbcalc.setGeometry(200, 195, 65, 25) pbcalc.clicked.connect(self.onClick_pb5) lblf = a.QLabel('Function: ', self) lblf.setGeometry(25, 140, 75, 30) self.txtfa = a.QLineEdit(self) self.txtfa.setGeometry(100, 140, 40, 30) lblfp = a.QLabel('+', self) lblfp.setGeometry(150, 140, 10, 30) self.txtfb = a.QLineEdit(self) self.txtfb.setGeometry(165, 140, 40, 30) self.lblf_r = a.QLabel( self) self.lblf_r.setGeometry(215, 140, 40, 30) def onClick_pb3(self): self.mdiwindow = WindowApp1() self.mdiwindow.show() self.hide() def onClick_pb4(self): a = int(self.txta.text()) b = self.txtb.text() update.update(a,b) self.lbla_r.setText(str(config.a)) self.lblb_r.setText(config.b) def onClick_pb5(self): self.lblf_r.setText('= ' + str(update.add(int(self.txtfa.text()),int(self.txtfb.text())))) if __name__ == "__main__": app = a.QApplication(s.argv) splash = WindowApp() splash.show() s.exit(app.exec())

main1.py:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

from imports import * import config class WindowApp1(a.QMainWindow): def __init__(self, parent=None): super().__init__() self.setWindowTitle("Post 31") self.setFixedSize(320, 245) self.lbla = a.QLabel('Global a: ', self) self.lbla.setGeometry(25, 55, 100, 30) self.lblb = a.QLabel('Global b: ', self) self.lblb.setGeometry(25, 100, 100, 30) self.pblogin = a.QPushButton('End', self) self.pblogin.setGeometry(100, 165, 65, 25) self.pblogin.clicked.connect(self.onClick_pb3) pbcanc = a.QPushButton('Print', self) pbcanc.setGeometry(180, 165, 65, 25) pbcanc.clicked.connect(self.onClick_pb4) def onClick_pb3(self): self.close() def onClick_pb4(self): self.lbla.setText('Global a: ' + str(config.a)) self.lblb.setText('Global b: ' + config.b) if __name__ == "__main__": app = a.QApplication(s.argv) splash = WindowApp1() splash.show() s.exit(app.exec())