‫Welcome back.
‫When we talked about lists, we saw our special type of nun where some methods that worked on lists
‫didn't really produce anything.
‫They modified the lists in place, but the output of whatever they were doing was this thing.
‫None.
‫Remember how we had in the output this nun?
‫What does that mean?
‫If you remember, I mentioned none as a special data type that exists in Python, and most languages
‫have something like this to represent the absence of value in some other languages you might have heard
‫of NULL, which is another thing that again represents the absence of value.
‫Now, why is this useful?
‫Well, for now, it's hard to really conceptualize it.
‫We'll see it being used a lot more as we get further into the course.
‫But I could do something like a equals none.
‫Let's say, for example, we're just starting a video game and in this video game we have a user's weapons.
‫But when you're just starting the game, there are no weapons that the user has.
‫Well, in that case, we might want to assign the variable weapons.
‫Maybe in our code we use this variable, but we also want to know that this user doesn't really have
‫any weapons.
‫It's none.
‫So this is completely valid python.
‫If I run this.
‫I get none.
‫And we'll explore this a little bit more throughout the course, like I said.
‫But hopefully this way you're not intimidated when you see it.
‫As the name suggests, it's just nothing.