Python class (object) has no attribute

Question

I'm a beginner in python classes and i have a little problem with this code (it's a pyqt code). The function globalprogress is called from another file but when he call the function UpdateBar, my computer keeps telling me that "Ui_IA object has no attribute 'progression'" but that's not true.

Does somebody knows if I did something wrong here? Thank you.

from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_IA(object):

    def setupUi(self, IA):
        IA.setObjectName("IA")
        IA.resize(931, 570)
        self.centralWidget = QtWidgets.QWidget(IA)
        self.centralWidget.setObjectName("centralWidget")
        self.progression = QtWidgets.QProgressBar(self.centralWidget)
        self.progression.setGeometry(QtCore.QRect(50, 450, 831, 61))
        self.progression.setProperty("value", 0)
        self.progression.setObjectName("progression")

    def UpdateBar(self):
        self.progression.setValue(percentage)

def globalprogress(number):
    global percentage
    UIIA = Ui_IA()
    percentage = int(number)
    UIIA.UpdateBar()

You have to call the setupUI method that allows you to fill in the widgets, I recommend you check the docs: http://pyqt.sourceforge.net/Docs/PyQt5/designer.html#using-the-generated-code — eyllanesc, Feb 19 '19 at 18:38

score 0 · Answer 1 · edited Feb 19 '19 at 16:34

0

the function setupUI(), in which the progression attribute is set, is not called by default. You can use __init__(), which will automatically run as soon as the class is instantiated (i.e. an object of the class is made), or force setupUI() to run within the globalprogress() function.

edited Feb 19 '19 at 16:34

sanyassh

8,100
13
36
70

answered Feb 19 '19 at 14:55

Bilbo Baggins

47
1
6

score 0 · Answer 2 · answered Feb 19 '19 at 16:01

0

You have to call setupUi() on your UIIA object before executing UpdateBar().

answered Feb 19 '19 at 16:01

Mike

16
1
2

How can I call setupUi() ? – Axel Rozental Feb 19 '19 at 16:40

score 0 · Answer 3 · answered Feb 19 '19 at 16:24

Try it:

import sys
from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_IA(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(931, 570)
        self.centralWidget = QtWidgets.QWidget(MainWindow)
        self.centralWidget.setObjectName("centralWidget")

        self.progression = QtWidgets.QProgressBar(self.centralWidget)
        self.progression.setGeometry(QtCore.QRect(50, 450, 831, 61))
        self.progression.setProperty("value", 0)
        self.progression.setObjectName("Progression")

        MainWindow.setCentralWidget(self.centralWidget)    

    def UpdateBar(self, MainWindow, percentage=0):
        self.progression.setValue(percentage)
        self.progression.show()

def globalprogress(number):
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_IA()
    ui.setupUi(MainWindow)
    MainWindow.show()
    ui.UpdateBar(MainWindow, number) 
    sys.exit(app.exec_())

if __name__ == "__main__":
    globalprogress(55)

Okay thanks I will try this solution – Axel Rozental Feb 19 '19 at 16:41 — Axel Rozental, Feb 19 '19 at 16:41

Python class (object) has no attribute

3 Answers3