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Grouping Consecutive Elements of a List into Twos in Python

Learn how to effortlessly group consecutive elements of a list into pairs using Python, avoiding duplication while maintaining structure. --- This video is based on the question https://stackoverflow.com/q/71985716/ asked by the user 'Aliko Aliko' ( https://stackoverflow.com/u/12583731/ ) and on the answer https://stackoverflow.com/a/71985752/ provided by the user 'Flow' ( https://stackoverflow.com/u/14121161/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Python group consecutive elements of a list into two's without repetition Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Grouping Consecutive Elements of a List into Twos in Python Manipulating lists is one of the core tasks that programmers often need to perform, especially in Python. One such interesting task is to group consecutive elements of a nested list into pairs. This guide will walk you through the problem and provide a clear solution to group these elements without any repetition. The Problem at Hand Suppose you have the following nested list: [[See Video to Reveal this Text or Code Snippet]] You might want to transform this list to obtain ordered pairs without repetition. The expected output would look like this: [[See Video to Reveal this Text or Code Snippet]] Understanding the Task To achieve this output, we need to do the following: Flatten the Nested List: First, we must convert the nested structure into a flat list that contains all the elements in sequential order. Group Elements into Pairs: Once we have a flat list, we can easily iterate through it and form pairs of consecutive elements. The Solution Let’s break down the solution into manageable steps. Step 1: Flatten the List To flatten the list, you can use a list comprehension that iterates over each sublist and its items. Here’s how you can implement it in code: [[See Video to Reveal this Text or Code Snippet]] Step 2: Group into Pairs Once you have the flat list, you can create pairs by slicing the list into sublists of two elements each. The following code combines both steps effectively: [[See Video to Reveal this Text or Code Snippet]] Running the Code When you run the complete code above, the output will be: [[See Video to Reveal this Text or Code Snippet]] You’ll notice each pair in the output corresponds correctly to the expected transformation of the input list. Conclusion In summary, by flattening your nested list and then slicing it into pairs, you can easily group consecutive elements of a list into twos without any repetition. This approach showcases Python's powerful list comprehensions and slicing techniques in action. Next time you need to manipulate lists, remember this method for handling consecutive elements efficiently! Feel free to reach out if you need help with other list-related manipulations or any Python programming queries. Happy coding!