Python file modes updating
At the inner level, the content frame was the master, with each of the other widgets being slaves.
So the same widget can be both a master and a slave.
One question remains, of course: how do you convert values to strings?
Luckily, Python has ways to convert any value to a string: pass it to the .
The second way is to use the class which offers yet another way to substitute values into strings.
GPIO (currently 0.5.5) is to flash a new SD card with the latest NOOBS or Raspbian.