In this Python post, we’ll learn how to use Python list insert method in our code. We’ll be using multiple examples for practical understanding.
We’ll be implementing the insert method with step by step explanation so you can have a better idea of how to use it.
So let’s not delay more and jump right into the implementation of Python list insert method.
What is Python List Insert?
The insert method of Python list is used to insert an item at a specific index in the list. After the insertion takes place, the items of list that on the right of the inserted item move to the right.
Don’t worry, in the next sections, we’ll understand it using proper examples. So let’s start implementing our Python list insert method using practical code examples.
Syntax of Insert Method
listName.insert(index,value)
As you can see, our insert method takes two arguments. First one specifies the index where the item will be added in the list and second one is the item itself.
Implementing Python List Insert Method (Multiple Examples)
Let’s now look at some practical examples on how to use insert method of Python list.
Example 1: Insert a String to the List
listofItems= [1,2,3,5,6] listofItems.insert(3,'Green') // it will insert the green text at the 4th position as index starts from 0 to list length -1 print(listofItems) // [1, 2, 3, 'Green', 5, 6]
You can see here that we’ve specified the index and value to be inserted. The value is inserted successfully and the items after the values are shifted to the right.
You can use integer as well. See below code:
listofItems= [1,2,3,5,6]
listofItems.insert(3,4) // insert the integer 4 in the 4th position within list
print(listofItems) // [1, 2, 3, 4, 5, 6]Example 2: Insert Method Returns None
The Python list insert method does not return any value, it just update the existing list by inserting a new value in it at a specific index. See below code:
listofItems= [1,2,3,5,6] var=listofItems.insert(3,4) print(var) // none
We’ve declared a new variable and have passed it the insert method, but you can see that it returns none. It means the insert method just update the existing list and does not return anything.
Example 3: Insert a List to the Existing List
listofItems= [1,2,3,5,6] listofItems.insert(3,[2,3,55]) // it will insert a list at 4th position in the existing list print(listofItems) // [1, 2, 3, [2, 3, 55], 5, 6]
So this is how you can easily insert a new list to any specific index of the existing list using the Python list insert method.
Example 4: Insert a Tuple to the List
listofItems= [4,2,8,9,6]
listofItems.insert(2,('green',7,21.4)) // a tuple will be inserted
print(listofItems) // [4, 2, ('green', 7, 21.4), 8, 9, 6]A tuple can be added like this using the insert method.
Example 5: Insert a Set to the List
listofItems= [2,56,1,6,'purple']
listofItems.insert(1,{'blue',7}) // a set will be inserted in the list
print(listofItems) // [2, {'blue', 7}, 56, 1, 6, 'purple']This is how you can easily insert a set to the current list.
So this is how you can use Python list insert method in your own Python code as well. Hope you like this post.
Don’t hesitate to ask if you still have any questions regarding the implementation of Python list insert method. I’d be happy to answer all your questions.
Conclusion
To conclude, I hope now you have a detailed comprehension of how to use the Python list insert method. I’d be delighted to have your feedback on this post. Thank you for reading it.
