﻿ Python: Compare two given lists and find the indices of the values present in both lists - w3resource

# Python: Compare two given lists and find the indices of the values present in both lists

## Python List: Exercise - 198 with Solution

Write a Python program to compare two given lists and find the indices of the values present in both lists.

Sample Solution:

Python Code:

``````def matched_index(l1, l2):
l2 = set(l2)
return [i for i, el in enumerate(l1) if el in l2]

nums1 = [1, 2, 3, 4, 5 ,6]
nums2 = [7, 8, 5, 2, 10, 12]
print("Original lists:")
print(nums1)
print(nums2)
print("Compare said two lists and get the indices of the values present in both lists:")
print(matched_index(nums1, nums2))

nums1 = [1, 2, 3, 4, 5 ,6]
nums2 = [7, 8, 5, 7, 10, 12]
print("\nOriginal lists:")
print(nums1)
print(nums2)
print("Compare said two lists and get the indices of the values present in both lists:")
print(matched_index(nums1, nums2))

nums1 = [1, 2, 3, 4, 15 ,6]
nums2 = [7, 8, 5, 7, 10, 12]
print("\nOriginal lists:")
print(nums1)
print(nums2)
print("Compare said two lists and get the indices of the values present in both lists:")
print(matched_index(nums1, nums2))
```
```

Sample Output:

```Original lists:
[1, 2, 3, 4, 5, 6]
[7, 8, 5, 2, 10, 12]
Compare said two lists and get the indices of the values present in both lists:
[1, 4]

Original lists:
[1, 2, 3, 4, 5, 6]
[7, 8, 5, 7, 10, 12]
Compare said two lists and get the indices of the values present in both lists:


Original lists:
[1, 2, 3, 4, 15, 6]
[7, 8, 5, 7, 10, 12]
Compare said two lists and get the indices of the values present in both lists:
[]
```

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Python Code Editor:

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﻿

## 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
```