When it is required to find the distance between the first and last even elements of a list, list elements are accessed using indexing and the difference is found.
Example
Below is a demonstration of the same
my_list = [2, 3, 6, 4, 6, 2, 9, 1, 14, 11]
print("The list is :")
print(my_list)
my_indices_list = [idx for idx in range(
len(my_list)) if my_list[idx] % 2 == 0]
my_result = my_indices_list[-1] - my_indices_list[0]
print("The result is :")
print(my_result)Output
The list is : [2, 3, 6, 4, 6, 2, 9, 1, 14, 11] The result is : 8
Explanation
A list is defined and is displayed on the console.
The list is iterated over, and the elements are checked to see if divisible by 2.
If so, they are assigned to a variable.
The difference between last and first element is obtained by indexing them.
This difference is assigned to a variable.
This variable is displayed on the console.