Flattening lists means converting a multidimensional or nested list into a one-dimensional list. For example, the process of converting this [[1,2], [3,4]] list to [1,2,3,4] is called flattening.

The process of flattening is very easy as we’ll see. You will learn how to flatten different shapes of lists with different techniques.

In this tutorial, you will learn flattening lists with different shapes & levels in Python using as list comprehension, deep flattening, and recursion.

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