Class and tkinter problem

[Paulo da Silva]

Às 16:02 de 07/01/21, Peter Otten escreveu:
> On 07/01/2021 08:42, Christian Gollwitzer wrote:
>> Am 07.01.21 um 08:29 schrieb Paulo da Silva:
>>
...

> 
> I recommend that the OP use a more conventional stye and do the setup
> outside the class or, better, in an instance of the class.
> 
There are lots of possible more conventional ways, of course.
My purpose was only to understand what was wrong.

Thanks anyway.