AttributeError: 'NoneType' object has no attribute 'get_text'

[MRAB]

Raji Seetharaman wrote:
> Hi all, i worked out python and glade example program to add two numbers 
> and display its output from the following link
> http://www.dreamincode.net/forums/showtopic63885.htm
> When i run the script, i received the following error
> 
> python add.py
> Traceback (most recent call last):
>   File "add.py", line 34, in add
>     thistime = adder( self.wTree.get_widget("entryNumber1").get_text(), 
> self.wTree.get_widget("entryNumber2").get_text())
> AttributeError: 'NoneType' object has no attribute 'get_text'
> 
> What has to be done to overcome this error?
> 
I think you need to name the text entry fields "entryNumber1" and
"entryNumber2".