That's the basics of object mutability.
You should now be able to identify whether an object is mutable or not,
less mutable, tuples and strings not.
You should be able to recognize when two variables are aliases for the same object and
realize that if you make a change to the object at one variable refers to,
you'll be changing the contents of the other variable at the same time.
We sometimes refer to mutation operations as destructive.
They changed the object and then any aliases for
that object also see the effects of that destruction.
Speaking of destructive operations,
did you hear about the guy who worked at the calendar factory?
He got fired because he took a couple days
off and another bonus joke: Was an undercover tarantulas alias?
A spider. Keep laughing,
keep coding, see you next time.