Python Empty List Of Size N
Last Updated : Aug 18, 2023
IN - Python
In this article we will show you the solution of python empty list of size n, an empty list is a sort of data structure in Python that can hold several elements of any kind. It offers a method for effectively organising and working with data.
Although an empty list by definition has no elements, it is possible to construct an empty list of a particular size.
You can initialise an empty list of size n with a predetermined number of placeholders, like None, or any other value that meets your needs.
This enables you to set aside room in the list for n elements, even if they haven't been assigned.
When you know ahead of time how many elements the list will eventually contain, having an empty list of size n can be helpful.
It offers a framework that can dynamically expand or change as new elements are added or old ones are eliminated. We'll talk about the concept of a Python empty list of size n now.
Step By Step Guide On Python Empty List Of Size N :-
n = 5 # Specify the desired size of the list empty_list = [None] * n # Create an empty list of size n # Print the initial empty list print("Initial empty list:", empty_list) # Assign values to the list for i in range(n): empty_list[i] = i + 1 # Print the modified list print("Modified list:", empty_list) # Append new elements to the list empty_list.append(6) empty_list.append(7) # Print the list after appending print("List after appending elements:", empty_list) # Remove elements from the list empty_list.remove(3) empty_list.remove(6) # Print the list after removal print("List after removing elements:", empty_list)
- We begin by utilising the variable n to indicate the required list size.
- The value of None is then multiplied by n to generate an empty list, which is named empty_list.
- This produces a list with n entries, all of which start out set to None.
- To display the initial empty list, we employ the print() method.
- We may see the list's initial state by writing "Initial empty list:" and then the value of the variable empty_list.
- Then, using a for loop, we iterate across the range of n.
- We give a value to each element of empty_list after each iteration.
- By utilising the index i to access the entries, we assign the value i + 1 to guarantee that the list contains only consecutive numbers beginning with 1.
- We use the print() function once more to display the changed list after assigning the values.
- We may see the list's modified values by writing "Modified list:" after the variable empty_list.
- Using the append() method, we show how to add new entries to a list.
- Call it empty_list.empty_list and append(6).append(7) will append the numbers 6 and 7 to the end of the list, respectively.
- We once more make use of the print() function to display the list after adding.
- We may see the list with the newly added elements by displaying "List after appending elements:" and then the variable empty_list.
- Next, we demonstrate how to use the remove() method to remove elements from a list.
- To remove the members from the list that have values of 3 and 6, respectively, we call empty_list.remove(3) and empty_list.remove(6).
- The print() function is then used to print the list after it has been removed.
- Printing "List after removing elements:" and the variable empty_list afterward allows us to see the list with the given elements deleted.
As a result, we were able to understand the idea of a Python empty list of size n.
A list with a certain number of elements can be created using the idea of an empty list of size n, even if the members are initially uninitialized or assigned to a placeholder value.
I hope this article on python empty list of size n helps you and the steps and method mentioned above are easy to follow and implement.