how to access variable from another class in python - class

Question

I would like to access variable lotId & qty_selected in class 'InputDialog' and to be use in class 'Mainwindow'. I did tried to find a solution in net but unable to solve it until now. can anyone show how to make it?
Here is my current code:
from __future__ import division
from skimage.measure import compare_ssim as ssim
import matplotlib.pyplot as plt
import numpy as np
import sys
import os, glob
import cv2
from PyQt4 import QtCore, QtGui, uic
from PyQt4.QtGui import *
from inputdialog import Ui_inputDialog
from mainwindow import Ui_mainWindow
from tkinter import messagebox
class MainWindow(QtGui.QMainWindow, Ui_mainWindow):
def __init__(self, class_input):
QtGui.QMainWindow.__init__(self)
Ui_mainWindow.__init__(self)
Ui_inputDialog.__init__(self)
self.setupUi(self)
self.capture_button.clicked.connect(self.captureImage)
self.display_button.clicked.connect(self.displayImage)
self.deviceBox.activated.connect(self.selectDeviceCombo)
self.startInspectionBtn.clicked.connect(self.enterLotID)
self.display_button.clicked.connect(self.displayResults)
#self.viewResultBtn.clicked.connect(self.viewResults)
self.window2 = None
def enterLotID(self): # Dialog box will ask user to enter lot ID and wafer qty
if self.window2 is None:
self.window2 = InputDialog(self)
self.window2.isModal()
self.window2.show()
# Program need to be loop through a image file in directory
def displayImage(self, ):
os.chdir('c:\\Users\\mohd_faizal4\\Desktop\\Python\\Testing' + '\\' + lotId )
for lotId in glob.glob('*.jpeg'):
print(lotId)
sample_label = 'c:/Users/mohd_faizal4/Desktop/Python/Image/Picture 6.jpg' # Sample image must read from current folder lot ID running the inspection
self.sample_label.setScaledContents(True)
self.sample_label.setPixmap(QtGui.QPixmap(sample_label))
def selectDeviceCombo(self):
self.var_Selected = self.deviceBox.currentText()
#print('The user selected value now is:')
print('Device = ' + self.var_Selected)
if self.var_Selected.lower() == 'xf35':
print("Great! Device Id is - " + self.var_Selected + '!')
source_label ='c:/Users/mohd_faizal4/Desktop/Python/Image/Picture 4.jpg'
self.source_label.setScaledContents(True)
self.source_label.setPixmap(QtGui.QPixmap(source_label))
elif self.var_Selected.lower() == 'xf38':
print("Great! Device Id is - " + self.var_Selected + '!')
source_label ='c:/Users/mohd_faizal4/Desktop/Python/Image/Picture 5.jpg'
self.source_label.setScaledContents(True)
self.source_label.setPixmap(QtGui.QPixmap(source_label))
elif self.var_Selected.lower() == 'x38c':
print("Great! Device Id is - " + self.var_Selected + '!')
source_label ='c:/Users/mohd_faizal4/Desktop/Python/Image/Picture 7.jpg'
self.source_label.setScaledContents(True)
self.source_label.setPixmap(QtGui.QPixmap(source_label))
else:
print("Pls select device id. It's compulsory field!")
def captureImage(self): # Capture image and display on 'Sample' column under Inspection
cam = cv2.VideoCapture(0)
i = 1
while i < int(input(qty_selected)):
ret, frame = cam.read()
cv2.imshow('Please review an image', frame)
if not ret:
break
k = cv2.waitKey(0)
if k%256 == 27:
# ESC pressed
print("Escape hit, closing...")
break
if k % 256 == 32:
# SPACE pressed
img_name = "_{}.jpeg".format(i)
#print (img_name)
cv2.imwrite(img_name, frame)
#cv2.imwrite(os.path.join(dirname, img_name), frame)
print("{}".format(img_name))
i += 1
cam.release()
cv2.destroyAllWindows()
def displayResults(self): #Display image of wafer at 'Result' tab. Simultaneously with 'Inspect'
label_vid01 = 'c:/Users/mohd_faizal4/Desktop/Python/Image/Picture 7.jpg'
self.label_vid01.setScaledContents(True)
self.label_vid01.setPixmap(QtGui.QPixmap(label_vid01))
# A new class for user input dialog to enter lot information
class InputDialog (QtGui.QDialog, Ui_inputDialog):
def __init__(self, parent):
QtGui.QWidget.__init__(self, parent)
self.setupUi(self)
self.okButton.clicked.connect(self.addLotId)
self.okButton.clicked.connect(self.selectWaferQty)
def addLotId(self):
lotId = str(self.strLotId.toPlainText())
self.strLotId.setText(lotId)
print(lotId)
path = 'c:\\Users\\mohd_faizal4\\Desktop\\Python\\Testing' + '\\' + lotId
if not os.path.exists(path):
os.makedirs(path)
else:
messagebox.showwarning('Error','Please enter required information')
QtGui.QMessageBox.show(self)
# User require to select wafer quantity upon enter the lot ID
def selectWaferQty(self):
qty_selected = self.waferQty.currentText()
#print ('The user selected value now is:')
print ('Wafer Qty = ' + qty_selected)
#if self.qty_selected() == '1':
# print('Great! Wafer Qty is - ' + self.qty_selected + '!')
#else:
# print ('Pls select wafer quantity!')
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
Window = MainWindow()
Window.show()
sys.exit()

Answer 1

Under the class InputDialog, change lotId and qty_selected to self.lotId and self.qty_selected, respectively. And to access it inside your WindowMain class, try self.window2.lotId and self.window2.qty_selected.