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

Last update on April 19 2025 12:58:50 (UTC/GMT +8 hours)

Remove Elements Present in Another List

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

Sample Solution:

Python Code:

# Define a function 'index_on_inner_list' that removes elements from list1 that are also in list2
def index_on_inner_list(list1, list2):
    # Use a list comprehension to iterate through list1 and keep elements that are not in list2
    result = [x for x in list1 if x not in list2]
    return result

# Create two lists 'list1' and 'list2'
list1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
list2 = [2, 4, 6, 8]

# Print messages indicating the original lists
print("Original lists:")
print("list1:", list1)
print("list2:", list2)

# Print a message indicating the operation to remove elements from 'list1' present in 'list2'
print("\nRemove all elements from 'list1' that are also present in 'list2:")
# Call the 'index_on_inner_list' function with 'list1' and 'list2' and print the result
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:

For more Practice: Solve these Related Problems:

Write a Python program to remove multiple elements from a list by value.
Write a Python program to filter a list by excluding elements from another list.
Write a Python program to find common and uncommon elements in two lists.
Write a Python program to create a difference list from two lists.

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