w3resource

Python: Remove all elements from a given list present in another list

Python List: Exercise - 117 with Solution

Write a Python program to remove all elements from a given list that are present in another list.

Sample Solution:

Python Code:

def index_on_inner_list(list1, list2):
    result = [x for x in list1 if x not in list2]
    return result

list1 = [1,2,3,4,5,6,7,8,9,10]
list2 = [2,4,6,8]

print("Original lists:")
print("list1:", list1)
print("list2:", list2)

print("\nRemove all elements from 'list1' present in 'list2:")
print(index_on_inner_list(list1, list2))

Sample Output:

Original lists:
list1: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
list2: [2, 4, 6, 8]

Remove all elements from 'list1' present in 'list2:
[1, 3, 5, 7, 9, 10]

Flowchart:

Flowchart: Remove all elements from a given list present in another 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:

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

Previous: Write a Python program to sort a list of lists by a given index of the inner list.
Next: Write a Python program to find the difference between elements (n+1th – nth) of a given list of numeric values.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.

Python: Tips of the Day

Returns True if the provided function returns True for every element in the list, False otherwise:

Example:

def tips_every(lst, fn=lambda x: x):
  return all(map(fn, lst))

print(tips_every([2, 4, 3], lambda x: x > 1))
print(tips_every([1, 2, 3]))

Output:

True
True