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Below see the syntax to use zip function in python;. Now we know that we use this function to zip or group the variable of different array sometimes it just remove the need of user object to be created. It just functions in the same way like its name just zipped different array or list variable values together. This can take any number of an iterable object, also the length of the iterable object is also not a constraint here.

If we talk about its return type it returns single objects which contain all the value zipped form the different iterable objects. We can use this function in so many places like if we want to amp the student data based on the name, city, marks, and roll number so we can use this function without creating a class for it.

In the above example, we are creating two arrays. The first array containing the name of the student and the second array containing the roll number associated with the student. IF we talk about any other programming language then we need an object which will bind both the variable of the student class or else we need to create a map that will map the value of the student as key value pair this will require a lot of code.

But in python, we have a zip function which will bind the variable of two or more different array into one single array. In the last line, we are calling the zip function and passing both the array into it as a parameter. You can customize it more if you want to. For example, you can replace None with a more indicative term such as Empty , Item Not Found , and so on.

If this article was helpful, tweet it. Learn to code for free. Get started. Forum Donate. Bala Priya C. Have you ever needed to loop through multiple iterables in parallel when coding in Python? This would cause confusion: You may run into IndexErrors as you're accessing items at indices that are no longer valid because the item at the index has been removed, or You may not be accessing newly added items at all as they are at indices not currently in the range of accessed indices.

How Python's zip Function Works Let's start by looking up the documentation for zip and parse it in the subsequent sections.

Make an iterator that aggregates elements from each of the iterables. Returns an iterator of tuples, where the i -th tuple contains the i -th element from each of the argument sequences or iterables. The iterator stops when the shortest input iterable is exhausted.

With a single iterable argument, it returns an iterator of 1-tuples. With no arguments, it returns an empty iterator. Notice how the first tuple at index 0 on the right contains 2 items, at index 0 in L1 and L2 , respectively. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Zip with list output instead of tuple Ask Question.

Asked 10 years, 1 month ago. Active 6 months ago. Viewed k times. What is the fastest and most elegant way of doing list of lists from two lists? Improve this question. Pale Blue Dot 5, 10 10 gold badges 67 67 silver badges bronze badges. Jan Vorcak Jan Vorcak 18k 13 13 gold badges 48 48 silver badges 85 85 bronze badges. Well, do you really need lists? What are you going to do with the results? An example would be sklearn, where many times data must be organized in this fashion.

Add a comment. Active Oldest Votes. If you are zipping more than 2 lists or even only 2, for that matter , a readable way would be: [list a for a in zip [1,2,3], [4,5,6], [7,8,9] ] This uses list comprehensions and converts each element in the list tuples into lists. Improve this answer.

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