﻿ Python: Find the nested lists elements, which are present in another list using lambda - w3resource

# 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 lists elements, which are present in another list using lambda.

Sample Solution:

Python Code :

``````def intersection_nested_lists(l1, l2):
result = [list(filter(lambda x: x in l1, sublist)) for sublist in l2]
return result
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("\nOriginal lists:")
print(nums1)
print(nums2)
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]]
```

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## Python: Tips of the Day

Returns a flat list of all the keys in a flat dictionary

Example:

```def tips_keys(flat_dict):
return list(flat_dict.keys())

ages = {
"Jack": 15,
"Owen": 21,
"Wyatt": 11,
}
print(tips_keys(ages))
```

Output:

```['Jack', 'Owen', 'Wyatt']
```