w3resource

Python: Find the difference between two list including duplicate elements

Python List: Exercise - 134 with Solution

Write a Python program to find the difference between two list including duplicate elements.

Sample Solution:

Python Code:

def list_difference(l1,l2):
    result = list(l1)
    for el in l2:
        result.remove(el)
    return result
l1 = [1,1,2,3,3,4,4,5,6,7]
l2 = [1,1,2,4,5,6]

print("Original lists:")
print(l1)
print(l2)
print("\nDifference between two said list including duplicate elements):")
print(list_difference(l1,l2))

Sample Output:

Original lists:
[1, 1, 2, 3, 3, 4, 4, 5, 6, 7]
[1, 1, 2, 4, 5, 6]

Difference between two said list including duplicate elements):
[3, 3, 4, 7]

Flowchart:

Flowchart: Find the difference between two list including duplicate elements.

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:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to check common elements between two given list are in same order or not.
Next: Write a Python program to iterate over all pairs of consecutive items in a given list.

What is the difficulty level of this exercise?

Test your Python skills with w3resource's quiz



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