CODEWITHSUNDEEP
pythonpyqt4
Vibhutha Kumarage
Vibhutha Kumarage

Reputation: 1399

Access Instance Variable from another class for GUI in pyqt

In my project I have 2 Classes. I have a problem in accessing variables from 2nd class. The code structure is as follows.

class Ui_Dialog(object):
    def setupUi(self, Dialog):
       -------------------
       -------------------
       -------------------
       -------------------
       -------------------
    def function1(self):
       self.variable_I_wanna_share="XXXX"
       -------------------
       -------------------
class Ui_MainWindow(QtGui.QMainWindow,Ui_Dialog):
    def setupUi(self, MainWindow):
       -------------------
       -------------------
       -------------------
       -------------------

    def function2(self):
       *Want to get that variable to here*
       -------------------

I inherited 2nd class from 1st class But it didn't work. Any one can help me to figure this out? Note - 1st and 2nd classes are generated from pyuic4(pyqt) separately Thank you.

Upvotes: 0

Views: 3214

Answers (1)

J.Serra
J.Serra

Reputation: 1458

As it has been suggested I think you can archive what you want using class variables.

class Ui_Dialog(object):
    variable_I_wanna_share = "XXXX"
    def setupUi(self, Dialog):
        pass
    def function1(self):
       Ui_Dialog.variable_I_wanna_share="YYYY"

class Ui_MainWindow(Ui_Dialog):
    def setupUi(self, MainWindow):
        pass
    def function2(self):
        #accessing class variable
        print(Ui_Dialog.variable_I_wanna_share)

dialog=Ui_Dialog()

window=Ui_MainWindow()

And here is the class var:

In [3]: window.function2()
XXXX

you can modify the class var with your function1 from any of the instances

In [4]: window.function1()

In [5]: window.function2()
YYYY

you can also access modify the class var form the instances

In [6]: window.variable_I_wanna_share
Out[6]: 'YYYY'

In [7]: dialog.variable_I_wanna_share
Out[7]: 'YYYY'

just remember that if you modify a class var referring it from a instance you will only modify it for that instance. 

In [8]: dialog.variable_I_wanna_share="ZZZZ"

In [9]: window.variable_I_wanna_share
Out[9]: 'YYYY'

In [10]: dialog.variable_I_wanna_share
Out[10]: 'ZZZZ'

Upvotes: 2

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