Python: Find the nested lists elements, which are present in another list using lambda

Python Lambda: Exercise-40 with Solution

Write a Python program to find the nested list elements, which are present in another list using lambda.

Sample Solution:

Python Code :

# Define a function 'intersection_nested_lists' that finds the intersection of elements between two nested lists
def intersection_nested_lists(l1, l2):
    # Use list comprehension with a nested filter to find elements in each sublist of 'l2' present in 'l1'
    # For each sublist in 'l2', filter elements that are present in 'l1' and create a list of these elements
    result = [list(filter(lambda x: x in l1, sublist)) for sublist in l2]
    
    # Return the resulting nested list
    return result

# Create two lists: 'nums1' containing integers and 'nums2' containing nested lists of integers
nums1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
nums2 = [[12, 18, 23, 25, 45], [7, 11, 19, 24, 28], [1, 5, 8, 18, 15, 16]]

# Print the original lists 'nums1' and 'nums2'
print("\nOriginal lists:")
print(nums1)
print(nums2)

# Find the intersection of elements between the nested lists in 'nums2' and 'nums1' using the function
print("\nIntersection of said nested lists:")
print(intersection_nested_lists(nums1, nums2)) 

Sample Output:

Original lists:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
[[12, 18, 23, 25, 45], [7, 11, 19, 24, 28], [1, 5, 8, 18, 15, 16]]

Intersection of said nested lists:
[[12], [7, 11], [1, 5, 8]]

Python Code Editor:

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