w3resource

Python: Get every nth element in a given list

Python List: Exercise - 269 with Solution

Write a Python program to get every nth element in a given list.

Use slice notation to create a new list that contains every nth element of the given list

Sample Solution:

Python Code:

# Define a function named 'every_nth' that returns every nth element from a list.
# It takes two parameters: 'nums' (the list) and 'nth' (the interval for selecting elements).
def every_nth(nums, nth):
    # Use list slicing to return elements starting from the (nth-1) index, with a step of 'nth'.
    return nums[nth - 1::nth]

# Create a sample list of integers from 1 to 10.
nums = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
# Print the original list elements.
print(every_nth(nums, 1))  # Select every 1st element (no change).
print(every_nth(nums, 2))  # Select every 2nd element.
print(every_nth(nums, 5))  # Select every 5th element.
print(every_nth(nums, 6))  # Select every 6th element. 

Sample Output:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
[2, 4, 6, 8, 10]
[5, 10]
[6]

Flowchart:

Flowchart: Get every nth element in a given list.

Python Code Editor:

Previous: Write a Python program to get a list with n elements removed from the left, right.
Next: Write a Python program to check if the elements of the first list are contained in the second one regardless of order.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://www.w3resource.com/python-exercises/list/python-data-type-list-exercise-269.php