List Comprehension

Question 1

List comprehension

Answer 1

A way to create a new list with less syntax, can mimic certain lambda functions, easier to read

Question 2

What types of list comprehension can you use

Answer 2

List = [expression for item in iterable]

List = [expression for item in iterable if conditional]

List = [expression if/else for item in iterable]

Question 3

Method without using list comprehension (e.g squares 1-11)

Answer 3

Squares = [] #create iterable/ emptylist
For i in range(1,11):# create for loop
Squares append(i*i)# define function

Print(squares)

Output:

[1,4,9,16,25,36,49, etc]

Question 4

Method using list comprehension

Answer 4

Squares = []
List = [i*i for i in range(1,11)]

Print(squares)

Output:

Output:

[1,4,9,16,25,36,49, etc]

Question 5

Ways of using list comprehensions:

Answer 5

List = [expression for item in iterable
List = [expression for item in iterable if conditional]
List = [expression if/ else for item in iterable]