I dont understand, how can I canculate the sides and value in class Die?

Hi there!

Hopefully you've now moved past this point, but just in case, the value in this example is the number you get as the result of a roll.

For example, a dice found in most board games has 6 sides or faces. Which ever one is facing "up" towards the player is the current value of the dice.

In this example, every instance of a Dice must have a number of sides (faces) declared at creation - which makes sense right? if you have a dice, you know how many sides it has, and that doesn't change. BUT you don't know its value until you roll it.

Here Kenneth has included a roll into the __init __ method, so whenever you create a dice, you get a random value - much like picking your dice out of a bag or box to use it. That's pretty useful, but it might make it hard to test your game if you don't always know what the value of the dice is. That's where the value parameter comes in. It has a default value of 0 so it's ignored by the or operator (0 is falsey in python) but we can overide it so that creating a dice will give it a set value (any number not 0 is truthy)

hope it helps/is useful to someone else who finds this :)