[Tutor] How to access a method defined in one class from another class (which is a thread) in Python3?

[SM]

On 08/08/13 21:24, SM wrote:

 example, I ended up doing exactly what you suggested. I am sure I am
> missing something, as it is giving the same error:
> Here is what I am doing based on your suggestion:
>
> class bcThread(threading.Thread):
>      def h(self, y):
>          y.setStdoutToTextEditWindowFw()   #(line 1277)
>

...

           [snip]
>           x = Ui_MainWindow()
>           self.h(x)    # (line 1319)
>

So far so good.


 class Ui_MainWindow(object)
>      def setupUi(self, MainWindow):
>          [snip]
>
>          self.textEdit_fwcmdlineoutput = QtGui.QTextEdit(self.tab_fw)
>

This only comes into existence after setupUi is called.
Normally that would be in the UI init() method but you don;t
show any init or any other call to setupUi

[SM] Sorry that I didn't add that part. setupUI is called from the main as
below:

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    MainWindow = QtGui.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

Wonder if it is necessary to call it through __init__. I used Py Qt4
Designer to generate the skeleton of the Gui code and have been using it
like this for sometime now.

Thanks,
-SM

self.textEdit_fwcmdlineoutput.setObjectName(_fromUtf8("textEdit_fwcmdlineoutput"))
>

      def setStdoutToTextEditWindowFw(self):
>          self.textEdit_fwcmdlineoutput.setText( sys.stdout.getvalue() )
>

So this fails if setupUi has not been called earlier because the attribute
has not been initialised yet.


      self.textEdit_fwcmdlineoutput.setText( sys.stdout.getvalue() )
> AttributeError: 'Ui_MainWindow' object has no attribute
> 'textEdit_fwcmdlineoutput'
>

You need to ensure that the UI __init__() method calls self.setupUi()
I suspect.


On Thu, Aug 8, 2013 at 4:57 PM, Alan Gauld <alan.gauld at btinternet.com>wrote:

> On 08/08/13 21:24, SM wrote:
>
>  example, I ended up doing exactly what you suggested. I am sure I am
>> missing something, as it is giving the same error:
>> Here is what I am doing based on your suggestion:
>>
>> class bcThread(threading.Thread):
>>      def h(self, y):
>>          y.setStdoutToTextEditWindowFw(**)   #(line 1277)
>>
>
> ...
>
>            [snip]
>>           x = Ui_MainWindow()
>>           self.h(x)    # (line 1319)
>>
>
> So far so good.
>
>
>  class Ui_MainWindow(object)
>>      def setupUi(self, MainWindow):
>>          [snip]
>>
>>          self.textEdit_fwcmdlineoutput = QtGui.QTextEdit(self.tab_fw)
>>
>
> This only comes into existence after setupUi is called.
> Normally that would be in the UI init() method but you don;t
> show any init or any other call to setupUi
>
>  self.textEdit_fwcmdlineoutput.**setObjectName(_fromUtf8("**
>> textEdit_fwcmdlineoutput"))
>>
>
>       def setStdoutToTextEditWindowFw(**self):
>>          self.textEdit_fwcmdlineoutput.**setText( sys.stdout.getvalue() )
>>
>
> So this fails if setupUi has not been called earlier because the attribute
> has not been initialised yet.
>
>
>       self.textEdit_fwcmdlineoutput.**setText( sys.stdout.getvalue() )
>> AttributeError: 'Ui_MainWindow' object has no attribute
>> 'textEdit_fwcmdlineoutput'
>>
>
> You need to ensure that the UI __init__() method calls self.setupUi()
> I suspect.
>
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
>
> ______________________________**_________________
> Tutor maillist  -  Tutor at python.org
> To unsubscribe or change subscription options:
> http://mail.python.org/**mailman/listinfo/tutor<http://mail.python.org/mailman/listinfo/tutor>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/tutor/attachments/20130808/ad1591b4/attachment-0001.html>