Python | Insert Nth element to Kth element in other list

Last Updated : 23 Jan, 2020

Sometimes, while working with Python list, there can be a problem in which we need to perform the inter list shifts of elements. Having solution to this problem is always very useful. Let’s discuss certain way in which this task can be performed.

Method : Using pop() + insert() + index()
This particular task can be performed using combination of above functions. In this we just use the property of pop function to return and remove element and insert it to the specific position of other list using index function.

# Python3 code to demonstrate working of
# Insert Nth element to Kth element in other list
# Using pop() + index() + insert()
  
# initializing lists
test_list1 = [4, 5, 6, 7, 3, 8]
test_list2 = [7, 6, 3, 8, 10, 12]
  
# printing original lists
print("The original list 1 is : " + str(test_list1))
print("The original list 2 is : " + str(test_list2))
  
# initializing N 
N = 5
  
# initializing K 
K = 3
  
# Using pop() + index() + insert()
# Insert Nth element to Kth element in other list
res = test_list1.insert(K, test_list2.pop(N))
  
# Printing result
print("The list 1 after insert is : " + str(test_list1))
print("The list 2 after remove is : " + str(test_list2))

Output :

The original list 1 is : [4, 5, 6, 7, 3, 8]
The original list 2 is : [7, 6, 3, 8, 10, 12]
The list 1 after insert is : [4, 5, 6, 12, 7, 3, 8]
The list 2 after remove is : [7, 6, 3, 8, 10]

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