On 07/04/17 20:21, Phil wrote:
> After a bit more thought I now realise that I just
> need to use self to reference e[][] in my check function.
You need to use self any time you access any member of your
class. So in your case:
class TestGUI:
def __init__(self, master):
self.master = master
...
self.e = [[None] * num_cols for _ in range(num_rows)]
...
self.check_button = Button(master,text="Check",
command=self.check)
...
def check(self,array): ...
The following attributes all need to be prefixed with self
any time you access them:
self.master
self.e
self.check_button
self.check
In this specific case you only need to use self.e
HTH
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
Follow my photo-blog on Flickr at:
http://www.flickr.com/photos/alangauldphotos
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