Python

Question 1

What is the difference between a tuple and a list?

Answer 1

A list is an ordered, mutable collection of elements you can add, remove or change elements after the list is created. e.g. l = [1,2,3]

A tuple is an ordered but IMMUTABLE collection of elements. Once a tuple is created, its contents can’t be changed. e.g. t = (1,2,3) They are thus slightly more memory efficient. They are used for fixed data like coordinates or config values.

Question 2

What is different about sets compared to tuples and lists?

Answer 2

Sets contain UNORDERED and only UNIQUE values e.g. {1,2,3}.

Question 3

Which brackets are used for sets, lists and tuples?

Answer 3

Sets = {}
lists = []
tuples = ()

Question 4

Out of sets, tuples and lists, which have only unique values? What is an implication of only having unique values?

Answer 4

Sets. They can’t be accessed with an index.

Question 5

Out of sets, tuples and lists, which have ordered values?

Answer 5

tuples and lists

Question 6

Out of sets, tuples and lists, which are mutable?

Answer 6

Sets and lists. Tuples are used for fixed values like coordinates.