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PYTHON PROGRAM • LISTS

Insert and Remove List Items in Python

Learn insert and remove list items in python with a short, executable Python example.

Beginnerinsert()remove()

PROBLEM UNDERSTANDING

Input and expected output

Sample input
No input required
Sample output
[1, 2, 3]

COMPLETE PYTHON PROGRAM

Complete Python implementation

python-list-insert-remove.py
Open in compiler
values = [1, 3, 4]
values.insert(1, 2)
values.remove(4)
print(values)

GUIDED CODE TOUR • NOT LIVE EXECUTION

Study the program line by line

Use the real compiler button above to run and debug with different inputs.

CURRENT STEP

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SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

[1, 2, 3]
0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

  1. Initialize the sample values used to insert and remove list items.
  2. Apply insert() and remove() to compute the required result.
  3. Display the result for insert and remove list items and compare it with the documented sample output.

This example of insert and remove list items computes the result directly from the prepared sample data. It demonstrates insert() and remove() and prints a deterministic result that can be checked against the sample output.

EFFICIENCY

Time and space complexity

Time complexity

O(n)

Auxiliary space

O(n)

DEBUGGING CHECKLIST

Common mistakes

Check this

For insert and remove list items, keep the data shape and value types consistent with insert().

Check this

Apply insert() in the same order shown by the algorithm; changing the order can change the result.

Check this

Verify the final insert() and remove() result against the sample before trying new data.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.