Which Choice Cannot be Used as an Entry?

Question

False

0

{2: 4, 3: 9, 4: 16,} <----- this apparently cannot be used as a dict entry. But running

>>>squares = {2: 4, 3: 9, 4: 16,}
print(squares)

Runs just fine. I'm having issues understanding a lot of this "simple" stuff :( How come the question says that's wrong, but Python's like "it's okay."?

Answer 1

The question in the course is, whether or not you can use this as a key, not if that is a valid dictionary.

{{2: 4, 3: 9, 4: 16,}: "Brian"} should not work.

Answer 2

@ James: Let's be precise here. The Key:Value pair is part of a larger object, namely a dictionary. And you cannot use dictionaries as keys in other dictionaries.

Answer 3

@ Tobi: Oh okay that makes sense. After defining a Key:Value you cannot use that as a Key itself to define another value... right?

It's taking me way longer than I'd appreciate to understand this stuff, lol.

Answer 4

gotcha. i thought it was referring to using that Key:Value set in 1 dictionary alone.

thanks for your time, and responses :) You're the Man Now, Dawg.