a) Use of random.choice() and random.shuffle() with Lists
1. random.choice()
The random.choice() function returns a random element from a non-empty list.
Example:
import random
fruits = [‘apple’, ‘banana’, ‘cherry’, ‘mango’]
random_fruit = random.choice(fruits)
print(“Randomly selected fruit:”, random_fruit)
Output (Sample): Randomly selected fruit: cherry
The output may vary each time the program is run, as the selection is random.
2. random.shuffle()
The random.shuffle() function shuffles the elements of a list in place, meaning it modifies the original list by rearranging the elements randomly.
Example:
import random
numbers = [1, 2, 3, 4, 5]
random.shuffle(numbers)
print(“Shuffled list:”, numbers)
Output (Sample): Shuffled list: [3, 5, 1, 2, 4]
Each run may produce a different order of elements.
b) Lists are Mutable
In Python, lists are mutable, meaning their contents can be changed after creation (i.e., elements can be modified, added, or removed).
Example:
numbers = [10, 20, 30, 40]
print(“Original list:”, numbers)
Modifying the second element
numbers[1] = 99
print(“Modified list:”, numbers)
Output:
This example demonstrates that list elements can be changed, confirming that lists are mutable.