Python List Comprehension

Question 1

Which of the following is a valid use case for a list comprehension in python?

Calculating the sum of elements in a list.

Opening and reading files.

Creating a dictionary.

Implementing complex logic with multiple loops.

Question 2

What is the result of the following list comprehension in python?

[word.upper () for word in [hello, world]]

[HELLO,WORLD]

[Hello,World]

[h, e, l, l, o, w, o, r, l, d]

[hElLo,wOrLd]

Question 3

Can you nest list comprehensions in python?

No, it's not possible to nest list comprehensions.

Yes, you can nest list comprehensions within other list comprehensions.

Nesting list comprehensions will result in an error.

List comprehensions can only be nested in loops, not in other list comprehensions.

Question 4

What is list comprehension in python?

A way to create a list of random elements.

A concise way to create lists by applying an expression to each item in an iterable.

A method to check if a list is empty.

A built-in Python function for sorting lists.

Question 5

What does the following list comprehension do in python?

[ x for x in range(1, 6) ]

Creates a list with numbers from 1 to 5

Creates a list with numbers from 1 to 6

Creates an empty list

Raises an error

Question 6

What does the following list comprehension do in python?

[ (x, y) for x in range(3) for y in range(3) ]

Creates a list of tuples with all combinations of (x, y) where both x and y range from 0 to 2.

Creates a list of tuples with all combinations of (x, y) where x ranges from 0 to 2 and y ranges from 0 to 3.

Creates an empty list.

Raises an error.

Question 7

What will be the result of the following list comprehension in python?

[ x for x in range(1, 10) if x % 2 == 0 ]

[2, 4, 6, 8]

[1, 3, 5, 7, 9]

[1 , 2, 3, 4, 5, 6, 7, 8, 9]

An error.

Question 8

Which symbol is used to define a list comprehension in python?

[ ]

{ }

( )

Question 9

How can you add a conditional statement to a list comprehension in python?

Use the if keyword.

Use the else keyword.

Use the when keyword.

Use the for keyword.

Question 10

How can you square all the elements in a list using a list comprehension?

[x*x*x for x in my_list]

[x^x for x in my_list]

[x**2 for x in my_list]

[square(x) for x in my_list]

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seema