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Python: Remove the last N number of elements from a given list

Python List: Exercise - 172 with Solution

Write a Python program to remove the last N number of elements from a given list.

Sample Solution:

Python Code:

def remove_last_n(nums, N):
    result = nums[:len(nums)-N]
    return result    
nums = [2,3,9,8,2,0,39,84,2,2,34,2,34,5,3,5]
print("Original lists:")
print(nums)
N = 3
print("\nRemove the last",N,"elements from the said list:")
print(remove_last_n(nums, N))
N = 5
print("\nRemove the last",N,"elements from the said list:")
print(remove_last_n(nums, N))
N = 1
print("\nRemove the last",N,"element from the said list:")
print(remove_last_n(nums, N))

Sample Output:

Original lists:
[2, 3, 9, 8, 2, 0, 39, 84, 2, 2, 34, 2, 34, 5, 3, 5]

Remove the last 3 elements from the said list:
[2, 3, 9, 8, 2, 0, 39, 84, 2, 2, 34, 2, 34]

Remove the last 5 elements from the said list:
[2, 3, 9, 8, 2, 0, 39, 84, 2, 2, 34]

Remove the last 1 element from the said list:
[2, 3, 9, 8, 2, 0, 39, 84, 2, 2, 34, 2, 34, 5, 3]

Pictorial Presentation:

Python List: Remove the last N number of elements from a given list.

Flowchart:

Flowchart: Remove the last N number of elements from a given list.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:


Python Code Editor:

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Python: Tips of the Day

Floor Division:

When we speak of division we normally mean (/) float division operator, this will give a precise result in float format with decimals.

For a rounded integer result there is (//) floor division operator in Python. Floor division will only give integer results that are round numbers.

print(1000 // 300)
print(1000 / 300)

Output:

3
3.3333333333333335