Python Functions

Python Functions - Important Points

11.		What is the output of the following code? numbers = [1, 2, 3, 4, 5] def square(x):return x * x squared_numbers = map(square, numbers) print(list(squared_numbers))

A. [1, 4, 9, 16, 25]

B. [1, 2, 3, 4, 5]

C. [2, 4, 6, 8, 10]

D. [3, 6, 9, 12, 15]

View Answer Discuss Work Space

Answer: option a

Explanation:

The map function applies the square function to each element of the numbers list and returns a new iterable. The list function is used to convert the iterable to a list, which is then printed.

12.		What is the purpose of the filter function in Python?

A. It applies a function to each element of an iterable and returns a new iterable

B. It filters an iterable based on a given function

C. It converts an iterable to a dictionary

D. It sorts an iterable based on a given function

View Answer Discuss Work Space

Answer: option b

Explanation:

The filter function filters an iterable based on a given function and returns a new iterable.

13.		What is the output of the following code? numbers = [1, 2, 3, 4, 5] def is_even(x):return x % 2 == 0 even_numbers = filter(is_even, numbers) print(list(even_numbers))

A. [1, 3, 5]

B. [2, 4]

C. [1, 2, 3, 4, 5]

D. []

View Answer Discuss Work Space

Answer: option b

Explanation:

The filter function applies the is_even function to each element of the numbers list and filters out the elements that are not even. The list function is used to convert the iterable to a list, which is then printed.

14.		What is the output of the following code? def my_function(a, b, c=0, d=0):return a + b + c + d result = my_function(1, 2, 3, 4) print(result)

A. 3

B. 6

C. 10

D. 5

View Answer Discuss Work Space

Answer: option c

Explanation:

The my_function function accepts four arguments, with the last two having default values of 0. The function returns the sum of all four arguments (1 + 2 + 3 + 4 = 10).

15.		What is the output of the following code? def my_function(*args):return sum(args) result = my_function(1, 2, 3, 4) print(result)

A. 1

B. 4

C. 10

D. 3

View Answer Discuss Work Space

Answer: option c

Explanation:

The my_function function accepts a variable number of positional arguments using the *args syntax. The function returns the sum of all the arguments passed to it (1 + 2 + 3 + 4 = 10).

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