Naming of variables

I’ll try in English. To use “QBtn” as a variable name: names beginning with Q should be reserved for Qt, to avoid the risk of a name collision between our program and PyQt. AM I right?

Below, in the text, you rename this QBtn variable as “buttons”.
Anyway, nice tutorials!
Cordialement

@PhilippeGeissbuehler this is very late, but I’ve fixed this now. Have recently updated the site to make keeping things updated much easier.