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Python | Every Kth element in list

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  • Last Updated : 03 Oct, 2019
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Sometimes, while working with Python lists, we can have a problem in which we require to extract every Kth element of list and slice out a new list from that. This type of problems are quite common as a variation of list slicing. Let’s discuss a way in which this can be done.

Method : Using list slicing
This task can be performed using list slicing functionality. The trick here is to use the skip functionality of list to get every Kth element of list. K, as defined can be used as skip element.




# Python3 code to demonstrate working of
# Kth element list
# Using list slicing 
  
# initializing list
test_list = [6, 4, 8, 9, 10, 5, 8, 9, 10, 2, 34, 5]
  
# printing list
print("The original list : " + str(test_list))
  
# initializing K 
K = 3
  
# Kth element list
# Using list slicing 
res = test_list[::K]
  
# Printing result
print("Kth element list is : " + str(res))

Output :

 
The original list : [6, 4, 8, 9, 10, 5, 8, 9, 10, 2, 34, 5]
Kth element list is : [6, 9, 8, 2]
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