[FIXED] PyQt5, Passing a variable list to the other class

Issue

The program has 2 windows that one is the main window and the other is the result window. I want to pass the data where I got the values in getValue() function to the other class which is the result window.

#### THIS PARAMETERS SHOULD PASS TO THE BILLETCALCULATIONRESULTS WINDOW TO CALCULATE ###
    def GetValues(self):
        self.Diameter = float(self.DiameterQline.text())
        self.Height = float(self.HeightQline.text())
        self.StartTemp = float(self.StartTempQline.text())
        self.FinalTemp = float(self.FinalTempQline.text())
        self.HeatingTime = float(self.HeatingTimeQline.text())

I want to do the calculation in the other window and will print the result to the screen. Like

class BilletCalculationResults(QWidget):
    def calc():
      return str(Main.diameter  * 2 )



def billetCalculationPageDesign(self):
      ### BILLET RESULTS OF CALCULATION PAGE DESIGN ###
      self.billetCalSurfaceAreaLabel = QLabel("Surface Area : ")
      self.billetCalSurfaceAreaLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
      str = self.calc()
      self.billetCalSurfaceAreaLabelResult = QLabel(str)

You can find the all code below. Thank you

from PyQt5.QtWidgets import *
from PyQt5 import QtCore
import sys
import math
from PyQt5.QtGui import QPixmap,QFont
import sqlite3




class Main(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Calculation")
        self.setGeometry(450,100,1250,600)
        self.UI()
        self.show()
    def UI(self):
        self.mainDesign()
        self.layouts()

    def mainDesign(self):
        self.setStyleSheet('background-color:white')
        #CUSTOMER INFORMATION BUTTONS AND TEXT###
        #### CALCULATE BUTTONS###
        self.buttonCalcBillet = QPushButton("Calculate")
        self.buttonCalcBillet.setStyleSheet(
            'background-color: orange;'
            'color: black;'
        )
        ### CALCULATE BUTTONS CLICKED ###
        self.buttonCalcBillet.clicked.connect(self.billetCalculationResults)
        ######
        self.Title = QLabel("Some Maths")
        self.Title.setAlignment(QtCore.Qt.AlignHCenter)
        self.Title.setStyleSheet('font-size: 18pt; font-family: arial,sans-serif')

        self.DiameterLabel = QLabel("Diameter")
        self.DiameterLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
        self.DiameterQline = QLineEdit()
        self.DiameterQline.setPlaceholderText("Please Enter Diameter in mm")
        self.DiameterQline.setStyleSheet(
            'font-family:Hack,monospace;'
            'font:12px;'
            'mind-width:20em;'
        )
        self.HeightLabel = QLabel("Height")
        self.HeightLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
        self.HeightQline = QLineEdit()
        self.HeightQline.setPlaceholderText("Please Enter Height in mm")
        self.StartTempLabel = QLabel("Start Temperature")
        self.StartTempLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
        self.StartTempQline = QLineEdit()
        self.StartTempQline.setPlaceholderText("Please Enter Start Temperature in Celsius")
        self.FinalTempLabel = QLabel("Final Temperature")
        self.FinalTempLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
        self.FinalTempQline = QLineEdit()
        self.FinalTempQline.setPlaceholderText("Please Enter Final Temperature in Celsius")
        self.HeatingTimeLabel = QLabel("Heating Time")
        self.HeatingTimeLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
        self.HeatingTimeQline = QLineEdit()
        self.HeatingTimeQline.setPlaceholderText("Please Enter Heating Time in Secs")





    def layouts(self):
        #####LAYOUTS#########
        self.mainLayout = QHBoxLayout()
        self.billetLayout = QFormLayout()
        self.slabLayout = QFormLayout()
        self.hollowLayout = QFormLayout()

        ###ADDING CHILD LAYOUTS TO MAIN LAYOUTS######
        self.mainLayout.addLayout(self.billetLayout,350)
        self.mainLayout.addLayout(self.slabLayout,350)
        self.mainLayout.addLayout(self.hollowLayout,350)
        ###CALCULATION BUTTON WIDGETS###


        self.billetLayout.addRow(self.Title)
        self.billetLayout.addRow(self.DiameterLabel, self.DiameterQline)
        self.billetLayout.addRow(self.HeightLabel, self.HeightQline)
        self.billetLayout.addRow(self.StartTempLabel, self.StartTempQline)
        self.billetLayout.addRow(self.FinalTempLabel, self.FinalTempQline)
        self.billetLayout.addRow(self.HeatingTimeLabel, self.HeatingTimeQline)
        self.billetLayout.addRow(self.buttonCalcBillet)


        ###ADDING WIDGETS TO CUSTOMER INFORMATION###



        ####SETTING MAIN LAYOUT###
        self.setLayout(self.mainLayout)


    def billetCalculationResults(self):
        self.billetCalculation = BilletCalculationResults()
        self.GetValues()
        self.close()


    def GetValues(self):

        self.Diameter = float(self.DiameterQline.text())
        self.Height = float(self.HeightQline.text())
        self.StartTemp = float(self.StartTempQline.text())
        self.FinalTemp = float(self.FinalTempQline.text())
        self.HeatingTime = float(self.HeatingTimeQline.text())




class BilletCalculationResults(QWidget):
      def __init__(self):
          super().__init__()
          self.setWindowTitle("Calculation Results")
          self.setGeometry(450,150,350,600)
          ####CONSTRUCTION OF THE FIRST BILLET CLASS ###
          self.UI()
          self.show()
      def UI(self):
          self.billetCalculationPageDesign()
          self.billetCalculationLayouts()
      def billetCalculationPageDesign(self):
          ### BILLET RESULTS OF CALCULATION PAGE DESIGN ###
          self.billetCalSurfaceAreaLabel = QLabel("Surface Area : ")
          self.billetCalSurfaceAreaLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
          str = "a"
          self.billetCalSurfaceAreaLabelResult = QLabel(str)
          self.billetCalSurfaceAreaLabelResult.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
          ####VOLUME####
          self.billetCalVolumeLabel = QLabel("Volume : ")
          self.billetCalVolumeLabel.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')
          self.billetCalVolumeLabelResult = QLabel("")
          self.billetCalVolumeLabelResult.setStyleSheet('font-size: 12pt; font-family: arial,sans-serif')

      def billetCalculationLayouts(self):
          ## BILLET RESULTS OF CALCULATION PAGE DESIGN ###
          self.billetMainLayout = QFormLayout()
          self.billetMainLayout.addRow(self.billetCalSurfaceAreaLabel,self.billetCalSurfaceAreaLabelResult)
          self.billetMainLayout.addRow(self.billetCalVolumeLabel,self.billetCalVolumeLabelResult)
          self.setLayout(self.billetMainLayout)







def main():
    APP = QApplication(sys.argv)
    window = Main()
    sys.exit(APP.exec())
if __name__== '__main__':
    main()

Solution

You almost had it, just get the values EDIT(1) and add them to the constructor of your second window classEDIT(2). You can also save them to variables, but as an example I printed the values to the comand line Edit(3).

...

    def billetCalculationResults(self):

        self.GetValues()                                                    # EDIT(1) by Shraft      
        self.billetCalculation = BilletCalculationResults(self.Diameter,    # EDIT
                self.Height,self.StartTemp,self.FinalTemp,self.HeatingTime) # EDIT
        self.close()                                                        # EDIT


    def GetValues(self):

        self.Diameter = float(self.DiameterQline.text())
        self.Height = float(self.HeightQline.text())
        self.StartTemp = float(self.StartTempQline.text())
        self.FinalTemp = float(self.FinalTempQline.text())
        self.HeatingTime = float(self.HeatingTimeQline.text())


class BilletCalculationResults(QWidget):
      def __init__(self, diameter, height, startTemp, finalTemp, heatingTime):      # EDIT(2) by Shraft  
          super().__init__()

          print(diameter)               # EDIT(3) by Shraft  
          print(height)                 # EDIT
          print(startTemp)              # EDIT
          print(finalTemp)              # EDIT
          print(heatingTime)            # EDIT

          self.setWindowTitle("Calculation Results")
          self.setGeometry(450,150,350,600)
          ####CONSTRUCTION OF THE FIRST BILLET CLASS ###
          self.UI()
          self.show()

...

Hope that helps you, are there more troubles let me know.

Answered By - Shraft