Remove Duplicates from Python Lists - Easy Steps | Python Programming

  1. Introduction
  2. Step 1: Create a List with Duplicates
  3. Step 2: Use set() to Remove Duplicates
  4. Step 3: Print the Result
  5. Conclusion


Python is one of the most popular programming languages in the world, known for its simplicity, flexibility, and extensive libraries. One of the most common tasks in Python programming is removing duplicates from lists, which can be done easily with just a few lines of code. In this article, we'll show you how to remove duplicates from Python lists in easy steps.

Step 1: Create a List with Duplicates

The first step is to create a list with duplicates. For this example, let's create a list of numbers:

numbers = [1, 2, 3, 4, 3, 2, 1, 5, 6, 5, 5]

As you can see, this list contains duplicates.

Step 2: Use set() to Remove Duplicates

The easiest way to remove duplicates from a list in Python is to convert the list into a set, and then convert the set back into a list.

numbers = list(set(numbers))

This will create a new list with the duplicates removed.

Step 3: Print the Result

Finally, let's print the result to make sure the duplicates have been removed:


This will output:

[1, 2, 3, 4, 5, 6]

As you can see, the duplicates have been removed and we have a list of unique numbers.


Removing duplicates from Python lists is a common task that can be easily accomplished with just a few lines of code. By converting the list into a set and then back into a list, we can easily remove duplicates and create a new list with unique values. With this knowledge, you can now easily remove duplicates from your Python lists in your programming projects.

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